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info.c

/* Module:          info.c
 *
 * Description:     This module contains routines related to
 *                  ODBC informational functions.
 *
 * Classes:         n/a
 *
 * API functions:   SQLGetInfo, SQLGetTypeInfo, SQLGetFunctions,
 *                  SQLTables, SQLColumns, SQLStatistics, SQLSpecialColumns,
 *                  SQLPrimaryKeys, SQLForeignKeys,
 *                  SQLProcedureColumns(NI), SQLProcedures(NI),
 *                  SQLTablePrivileges(NI), SQLColumnPrivileges(NI)
 *
 * Comments:        See "notice.txt" for copyright and license information.
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <stdio.h>
#include "psqlodbc.h"

#ifndef WIN32

#ifdef UNIXODBC
#include <sql.h>
#include <sqlext.h>
#else
#include "iodbc.h"
#include "isql.h"
#include "isqlext.h"
#endif

#include <ctype.h>      /* for tolower function */

#else
#include <windows.h>
#include <sql.h>
#include <sqlext.h>
#endif

#include "tuple.h"
#include "pgtypes.h"

#include "environ.h"
#include "connection.h"
#include "statement.h"
#include "qresult.h"
#include "bind.h"
#include "misc.h"
#include "pgtypes.h"


/*    Trigger related stuff for SQLForeign Keys */
#define TRIGGER_SHIFT 3
#define TRIGGER_MASK   0x03
#define TRIGGER_DELETE 0x01
#define TRIGGER_UPDATE 0x02


extern GLOBAL_VALUES globals;


/*//      -       -       -       -       -       -       -       -       - */

RETCODE SQL_API SQLGetInfo(
        HDBC      hdbc,
        UWORD     fInfoType,
        PTR       rgbInfoValue,
        SWORD     cbInfoValueMax,
        SWORD FAR *pcbInfoValue)
{
static char *func = "SQLGetInfo";
ConnectionClass *conn = (ConnectionClass *) hdbc;
ConnInfo *ci;
char *p = NULL;
int len = 0, value = 0;
RETCODE result;

      mylog( "%s: entering...fInfoType=%d\n", func, fInfoType);

      if ( ! conn) {
            CC_log_error(func, "", NULL);
            return SQL_INVALID_HANDLE;
      }

      ci = &conn->connInfo;

    switch (fInfoType) {
    case SQL_ACCESSIBLE_PROCEDURES: /* ODBC 1.0 */
            p = "N";
        break;

    case SQL_ACCESSIBLE_TABLES: /* ODBC 1.0 */
            p = "N";
        break;

    case SQL_ACTIVE_CONNECTIONS: /* ODBC 1.0 */
        len = 2;
        value = MAX_CONNECTIONS;
        break;

    case SQL_ACTIVE_STATEMENTS: /* ODBC 1.0 */
        len = 2;
        value = 0;
        break;

    case SQL_ALTER_TABLE: /* ODBC 2.0 */
        len = 4;
        value = SQL_AT_ADD_COLUMN;
        break;

    case SQL_BOOKMARK_PERSISTENCE: /* ODBC 2.0 */
            /* very simple bookmark support */
            len = 4;
        value = globals.use_declarefetch ? 0 : (SQL_BP_SCROLL);         
        break;

    case SQL_COLUMN_ALIAS: /* ODBC 2.0 */
            p = "N";
        break;

    case SQL_CONCAT_NULL_BEHAVIOR: /* ODBC 1.0 */
        len = 2;
        value = SQL_CB_NON_NULL;
        break;

    case SQL_CONVERT_BIGINT:
    case SQL_CONVERT_BINARY:
    case SQL_CONVERT_BIT:
    case SQL_CONVERT_CHAR:
    case SQL_CONVERT_DATE:
    case SQL_CONVERT_DECIMAL:
    case SQL_CONVERT_DOUBLE:
    case SQL_CONVERT_FLOAT:
    case SQL_CONVERT_INTEGER:
    case SQL_CONVERT_LONGVARBINARY:
    case SQL_CONVERT_LONGVARCHAR:
    case SQL_CONVERT_NUMERIC:
    case SQL_CONVERT_REAL:
    case SQL_CONVERT_SMALLINT:
    case SQL_CONVERT_TIME:
    case SQL_CONVERT_TIMESTAMP:
    case SQL_CONVERT_TINYINT:
    case SQL_CONVERT_VARBINARY:
    case SQL_CONVERT_VARCHAR: /* ODBC 1.0 */
            len = 4;
        value = fInfoType;
        break;

    case SQL_CONVERT_FUNCTIONS: /* ODBC 1.0 */
            len = 4;
        value = 0;
        break;

    case SQL_CORRELATION_NAME: /* ODBC 1.0 */

            /*    Saying no correlation name makes Query not work right.
                  value = SQL_CN_NONE;
            */
            len = 2;
        value = SQL_CN_ANY;
        break;

    case SQL_CURSOR_COMMIT_BEHAVIOR: /* ODBC 1.0 */
        len = 2;
        value = SQL_CB_CLOSE;
        break;

    case SQL_CURSOR_ROLLBACK_BEHAVIOR: /* ODBC 1.0 */
        len = 2;
        value = SQL_CB_CLOSE;
        break;

    case SQL_DATA_SOURCE_NAME: /* ODBC 1.0 */
            p = CC_get_DSN(conn);
        break;

    case SQL_DATA_SOURCE_READ_ONLY: /* ODBC 1.0 */
            p = CC_is_readonly(conn) ? "Y" : "N";
        break;

    case SQL_DATABASE_NAME: /* Support for old ODBC 1.0 Apps */

            /*    Returning the database name causes problems in MS Query.
                  It generates query like: "SELECT DISTINCT a FROM byronncrap3 crap3"

                  p = CC_get_database(conn);
            */
            p = "";
            break;

    case SQL_DBMS_NAME: /* ODBC 1.0 */
            p = DBMS_NAME;
        break;

    case SQL_DBMS_VER: /* ODBC 1.0 */
            p = DBMS_VERSION;
        break;

    case SQL_DEFAULT_TXN_ISOLATION: /* ODBC 1.0 */
            len = 4;
        value = SQL_TXN_READ_COMMITTED; /*//SQL_TXN_SERIALIZABLE; */
        break;

    case SQL_DRIVER_NAME: /* ODBC 1.0 */
        p = DRIVER_FILE_NAME;
        break;

    case SQL_DRIVER_ODBC_VER:
            p = DRIVER_ODBC_VER;
        break;

    case SQL_DRIVER_VER: /* ODBC 1.0 */
        p = POSTGRESDRIVERVERSION;
        break;

    case SQL_EXPRESSIONS_IN_ORDERBY: /* ODBC 1.0 */
            p = "N";
        break;

    case SQL_FETCH_DIRECTION: /* ODBC 1.0 */
            len = 4;
        value = globals.use_declarefetch ? (SQL_FD_FETCH_NEXT) : (SQL_FD_FETCH_NEXT |
                                   SQL_FD_FETCH_FIRST |
                                   SQL_FD_FETCH_LAST |
                                   SQL_FD_FETCH_PRIOR |
                                   SQL_FD_FETCH_ABSOLUTE |
                                                   SQL_FD_FETCH_RELATIVE |
                                                   SQL_FD_FETCH_BOOKMARK);
        break;

    case SQL_FILE_USAGE: /* ODBC 2.0 */
            len = 2;
        value = SQL_FILE_NOT_SUPPORTED;
        break;

    case SQL_GETDATA_EXTENSIONS: /* ODBC 2.0 */
            len = 4;
        value = (SQL_GD_ANY_COLUMN | SQL_GD_ANY_ORDER | SQL_GD_BOUND | SQL_GD_BLOCK);
        break;

    case SQL_GROUP_BY: /* ODBC 2.0 */
            len = 2;
        value = SQL_GB_GROUP_BY_EQUALS_SELECT;
        break;

    case SQL_IDENTIFIER_CASE: /* ODBC 1.0 */
        /*  are identifiers case-sensitive (yes, but only when quoted.  If not quoted, they
                  default to lowercase)
            */
            len = 2;
        value = SQL_IC_LOWER;
        break;

    case SQL_IDENTIFIER_QUOTE_CHAR: /* ODBC 1.0 */
        /* the character used to quote "identifiers" */
            p = PROTOCOL_62(ci) ? " " : "\"";
        break;

    case SQL_KEYWORDS: /* ODBC 2.0 */
            p = "";
        break;

    case SQL_LIKE_ESCAPE_CLAUSE: /* ODBC 2.0 */
            /*    is there a character that escapes '%' and '_' in a LIKE clause?
                  not as far as I can tell
            */
        p = "N";
        break;

    case SQL_LOCK_TYPES: /* ODBC 2.0 */
            len = 4;
        value = globals.lie ? (SQL_LCK_NO_CHANGE | SQL_LCK_EXCLUSIVE | SQL_LCK_UNLOCK) : SQL_LCK_NO_CHANGE;
        break;

    case SQL_MAX_BINARY_LITERAL_LEN: /* ODBC 2.0 */
            len = 4;
        value = 0;
        break;

    case SQL_MAX_CHAR_LITERAL_LEN: /* ODBC 2.0 */
            len = 4;
        value = 0;
        break;

    case SQL_MAX_COLUMN_NAME_LEN: /* ODBC 1.0 */
            len = 2;
        value = MAX_COLUMN_LEN;
        break;

    case SQL_MAX_COLUMNS_IN_GROUP_BY: /* ODBC 2.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_INDEX: /* ODBC 2.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_ORDER_BY: /* ODBC 2.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_SELECT: /* ODBC 2.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_COLUMNS_IN_TABLE: /* ODBC 2.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_CURSOR_NAME_LEN: /* ODBC 1.0 */
            len = 2;
        value = MAX_CURSOR_LEN;
        break;

    case SQL_MAX_INDEX_SIZE: /* ODBC 2.0 */
            len = 4;
        value = 0;
        break;

    case SQL_MAX_OWNER_NAME_LEN: /* ODBC 1.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_PROCEDURE_NAME_LEN: /* ODBC 1.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_QUALIFIER_NAME_LEN: /* ODBC 1.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_ROW_SIZE: /* ODBC 2.0 */
            len = 4;
        value = 8192;
        break;

    case SQL_MAX_ROW_SIZE_INCLUDES_LONG: /* ODBC 2.0 */
        /*  does the preceding value include LONGVARCHAR and LONGVARBINARY
                  fields?   Well, it does include longvarchar, but not longvarbinary.
            */
            p = "Y";
        break;

    case SQL_MAX_STATEMENT_LEN: /* ODBC 2.0 */
        /* maybe this should be 8192? */
            len = 4;
        value = 0;
        break;

    case SQL_MAX_TABLE_NAME_LEN: /* ODBC 1.0 */
            len = 2;
        value = MAX_TABLE_LEN;
        break;

    case SQL_MAX_TABLES_IN_SELECT: /* ODBC 2.0 */
            len = 2;
        value = 0;
        break;

    case SQL_MAX_USER_NAME_LEN:
            len = 2;
        value = 0;
        break;

    case SQL_MULT_RESULT_SETS: /* ODBC 1.0 */
        /* Don't support multiple result sets but say yes anyway? */
            p = "Y";
        break;

    case SQL_MULTIPLE_ACTIVE_TXN: /* ODBC 1.0 */
            p = "Y";
        break;

    case SQL_NEED_LONG_DATA_LEN: /* ODBC 2.0 */
            /*    Dont need the length, SQLPutData can handle any size and multiple calls */
            p = "N";
        break;

    case SQL_NON_NULLABLE_COLUMNS: /* ODBC 1.0 */
            len = 2;
        value = SQL_NNC_NON_NULL;
        break;

    case SQL_NULL_COLLATION: /* ODBC 2.0 */
        /* where are nulls sorted? */
            len = 2;
        value = SQL_NC_END;
        break;

    case SQL_NUMERIC_FUNCTIONS: /* ODBC 1.0 */
            len = 4;
        value = 0;
        break;

    case SQL_ODBC_API_CONFORMANCE: /* ODBC 1.0 */
            len = 2;
        value = SQL_OAC_LEVEL1;
        break;

    case SQL_ODBC_SAG_CLI_CONFORMANCE: /* ODBC 1.0 */
            len = 2;
        value = SQL_OSCC_NOT_COMPLIANT;
        break;

    case SQL_ODBC_SQL_CONFORMANCE: /* ODBC 1.0 */
            len = 2;
        value = SQL_OSC_CORE;
        break;

    case SQL_ODBC_SQL_OPT_IEF: /* ODBC 1.0 */
            p = "N";
        break;

    case SQL_ORDER_BY_COLUMNS_IN_SELECT: /* ODBC 2.0 */
            p = "Y";
        break;

    case SQL_OUTER_JOINS: /* ODBC 1.0 */
            p = "N";
        break;

    case SQL_OWNER_TERM: /* ODBC 1.0 */
            p = "owner";
        break;

      case SQL_OWNER_USAGE: /* ODBC 2.0 */
            /* BEGIN - This says that we do not support owner name prefixs on table names. (OWNER col should also be NULL in SQLTables... see SQLGetData)
            */
            /* END - Peter Harvey */
            len = 4;
        value = 0;
        break;

    case SQL_POS_OPERATIONS: /* ODBC 2.0 */
            len = 4;
        value = globals.lie ? (SQL_POS_POSITION | SQL_POS_REFRESH | SQL_POS_UPDATE | SQL_POS_DELETE | SQL_POS_ADD) : (SQL_POS_POSITION | SQL_POS_REFRESH);
        break;

    case SQL_POSITIONED_STATEMENTS: /* ODBC 2.0 */
            len = 4;
        value = globals.lie ? (SQL_PS_POSITIONED_DELETE |
                                                SQL_PS_POSITIONED_UPDATE |
                                                SQL_PS_SELECT_FOR_UPDATE) : 0;
        break;

    case SQL_PROCEDURE_TERM: /* ODBC 1.0 */
        p = "procedure";
        break;

    case SQL_PROCEDURES: /* ODBC 1.0 */
            p = "Y";
        break;

    case SQL_QUALIFIER_LOCATION: /* ODBC 2.0 */
            len = 2;
        value = SQL_QL_START;
        break;

    case SQL_QUALIFIER_NAME_SEPARATOR: /* ODBC 1.0 */
            p = "";
        break;

    case SQL_QUALIFIER_TERM: /* ODBC 1.0 */
            p = "";
        break;

      case SQL_QUALIFIER_USAGE: /* ODBC 2.0 */
            len = 4;
        value = 0;
        break;

    case SQL_QUOTED_IDENTIFIER_CASE: /* ODBC 2.0 */
        /* are "quoted" identifiers case-sensitive?  YES! */
            len = 2;
        value = SQL_IC_SENSITIVE;
        break;

    case SQL_ROW_UPDATES: /* ODBC 1.0 */
        /*  Driver doesn't support keyset-driven or mixed cursors, so
                  not much point in saying row updates are supported
            */
        p = globals.lie ? "Y" : "N";
        break;

    case SQL_SCROLL_CONCURRENCY: /* ODBC 1.0 */
            len = 4;
        value = globals.lie ? (SQL_SCCO_READ_ONLY |
                                                SQL_SCCO_LOCK |
                                                SQL_SCCO_OPT_ROWVER |
                                                SQL_SCCO_OPT_VALUES) : (SQL_SCCO_READ_ONLY);
        break;

    case SQL_SCROLL_OPTIONS: /* ODBC 1.0 */
            len = 4;
        value = globals.lie ? (SQL_SO_FORWARD_ONLY |
                                                SQL_SO_STATIC |
                                                SQL_SO_KEYSET_DRIVEN |
                                                SQL_SO_DYNAMIC |
                                                SQL_SO_MIXED) : (globals.use_declarefetch ? SQL_SO_FORWARD_ONLY : (SQL_SO_FORWARD_ONLY | SQL_SO_STATIC));
        break;

    case SQL_SEARCH_PATTERN_ESCAPE: /* ODBC 1.0 */
            p = "";
        break;

    case SQL_SERVER_NAME: /* ODBC 1.0 */
            p = CC_get_server(conn);
        break;

    case SQL_SPECIAL_CHARACTERS: /* ODBC 2.0 */
        p = "_";
        break;

    case SQL_STATIC_SENSITIVITY: /* ODBC 2.0 */
            len = 4;
        value = globals.lie ? (SQL_SS_ADDITIONS | SQL_SS_DELETIONS | SQL_SS_UPDATES) : 0;
        break;

    case SQL_STRING_FUNCTIONS: /* ODBC 1.0 */
            len = 4;
        value = (SQL_FN_STR_CONCAT |
                        SQL_FN_STR_LCASE |
                        SQL_FN_STR_LENGTH |
                        SQL_FN_STR_LOCATE |
                        SQL_FN_STR_LTRIM |
                        SQL_FN_STR_RTRIM |
                        SQL_FN_STR_SUBSTRING |
                        SQL_FN_STR_UCASE);
        break;

    case SQL_SUBQUERIES: /* ODBC 2.0 */
            /* postgres 6.3 supports subqueries */
            len = 4;
        value = (SQL_SQ_QUANTIFIED |
                        SQL_SQ_IN |
                        SQL_SQ_EXISTS |
                        SQL_SQ_COMPARISON);
        break;

    case SQL_SYSTEM_FUNCTIONS: /* ODBC 1.0 */
            len = 4;
            value = 0;
        break;

    case SQL_TABLE_TERM: /* ODBC 1.0 */
            p = "table";
        break;

    case SQL_TIMEDATE_ADD_INTERVALS: /* ODBC 2.0 */
            len = 4;
        value = 0;
        break;

    case SQL_TIMEDATE_DIFF_INTERVALS: /* ODBC 2.0 */
            len = 4;
        value = 0;
        break;

    case SQL_TIMEDATE_FUNCTIONS: /* ODBC 1.0 */
            len = 4;
        value = (SQL_FN_TD_NOW);
        break;

    case SQL_TXN_CAPABLE: /* ODBC 1.0 */
        /* Postgres can deal with create or drop table statements in a transaction */
            len = 2;
        value = SQL_TC_ALL;
        break;

    case SQL_TXN_ISOLATION_OPTION: /* ODBC 1.0 */
            len = 4;
        value = SQL_TXN_READ_COMMITTED; /*// SQL_TXN_SERIALIZABLE; */
        break;

    case SQL_UNION: /* ODBC 2.0 */
            /*  unions with all supported in postgres 6.3 */
            len = 4;
        value = (SQL_U_UNION | SQL_U_UNION_ALL);
        break;

    case SQL_USER_NAME: /* ODBC 1.0 */
            p = CC_get_username(conn);
        break;

    /* 
     * These have been added even though they are ODBC 3 attributes to enable
     * StarOffice 6.0 and OpenOffice to work, its a problem in the app, but
     * we do what we can...
     */
    case /*SQL_CREATE_VIEW*/ 134:
            len = 4;
        value = SQL_CV_CREATE_VIEW;
        break;

    case /*SQL_STATIC_CURSOR_ATTRIBUTES1*/ 167:
        len = 4;
        /*value = SQL_CA1_NEXT | SQL_CA1_ABSOLUTE | SQL_CA1_RELATIVE | SQL_CA1_BOOKMARK;*/
        value = 0x00000001L | 0x00000002L | 0x00000004L | 0x00000008L;
        break;

    default:
        /* unrecognized key */
        conn->errormsg = "Unrecognized key passed to SQLGetInfo.";
        conn->errornumber = CONN_NOT_IMPLEMENTED_ERROR;
            CC_log_error(func, "", conn);
        return SQL_ERROR;
    }

      result = SQL_SUCCESS;

      mylog("SQLGetInfo: p='%s', len=%d, value=%d, cbMax=%d\n", p?p:"<NULL>", len, value, cbInfoValueMax);

      /*    NOTE, that if rgbInfoValue is NULL, then no warnings or errors should
            result and just pcbInfoValue is returned, which indicates what length
            would be required if a real buffer had been passed in.
      */
      if (p) {  /* char/binary data */
            len = strlen(p);

            if (rgbInfoValue) {
                  strncpy_null((char *)rgbInfoValue, p, (size_t)cbInfoValueMax);

                  if (len >= cbInfoValueMax)  {
                        result = SQL_SUCCESS_WITH_INFO;
                        conn->errornumber = STMT_TRUNCATED;
                        conn->errormsg = "The buffer was too small for the result.";
                  }
            }
      }

      else {      /* numeric data */
            
            if (rgbInfoValue) {
            
                  if (len == 2 )
                        *((WORD *)rgbInfoValue) = (WORD) value;
                  else if (len == 4)
                        *((DWORD *)rgbInfoValue) = (DWORD) value;
            }
      }

      if (pcbInfoValue)
            *pcbInfoValue = len;

      return result;
}

/*//      -       -       -       -       -       -       -       -       - */


RETCODE SQL_API SQLGetTypeInfo(
        HSTMT   hstmt,
        SWORD   fSqlType)
{
static char *func = "SQLGetTypeInfo";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
int i;
/*// Int4 type; */
Int4 pgType;
Int2 sqlType;

      mylog("%s: entering...fSqlType = %d\n", func, fSqlType);

      if( ! stmt) {
            SC_log_error(func, "", NULL);
            return SQL_INVALID_HANDLE;
      }


      stmt->manual_result = TRUE;
      stmt->result = QR_Constructor();
      if( ! stmt->result) {
            SC_log_error(func, "Error creating result.", stmt);
            return SQL_ERROR;
      }

      extend_bindings(stmt, 15);

      QR_set_num_fields(stmt->result, 15);
      QR_set_field_info(stmt->result, 0, "TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 1, "DATA_TYPE", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 2, "PRECISION", PG_TYPE_INT4, 4);
      QR_set_field_info(stmt->result, 3, "LITERAL_PREFIX", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 4, "LITERAL_SUFFIX", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 5, "CREATE_PARAMS", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 6, "NULLABLE", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 7, "CASE_SENSITIVE", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 8, "SEARCHABLE", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 9, "UNSIGNED_ATTRIBUTE", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 10, "MONEY", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 11, "AUTO_INCREMENT", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 12, "LOCAL_TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 13, "MINIMUM_SCALE", PG_TYPE_INT2, 2);
      QR_set_field_info(stmt->result, 14, "MAXIMUM_SCALE", PG_TYPE_INT2, 2);

      for(i=0, sqlType = sqlTypes[0]; sqlType; sqlType = sqlTypes[++i]) {
            pgType = sqltype_to_pgtype(sqlType);

            if (fSqlType == SQL_ALL_TYPES || fSqlType == sqlType) {
                  row = (TupleNode *)malloc(sizeof(TupleNode) + (15 - 1)*sizeof(TupleField));

                  /*    These values can't be NULL */
                  set_tuplefield_string(&row->tuple[0], pgtype_to_name(stmt, pgType));
                  set_tuplefield_int2(&row->tuple[1], (Int2) sqlType);
                  set_tuplefield_int2(&row->tuple[6], pgtype_nullable(stmt, pgType));
                  set_tuplefield_int2(&row->tuple[7], pgtype_case_sensitive(stmt, pgType));
                  set_tuplefield_int2(&row->tuple[8], pgtype_searchable(stmt, pgType));
                  set_tuplefield_int2(&row->tuple[10], pgtype_money(stmt, pgType));

                  /*    Localized data-source dependent data type name (always NULL) */
                  set_tuplefield_null(&row->tuple[12]);     

                  /*    These values can be NULL */
                  set_nullfield_int4(&row->tuple[2], pgtype_precision(stmt, pgType, PG_STATIC, PG_STATIC));
                  set_nullfield_string(&row->tuple[3], pgtype_literal_prefix(stmt, pgType));
                  set_nullfield_string(&row->tuple[4], pgtype_literal_suffix(stmt, pgType));
                  set_nullfield_string(&row->tuple[5], pgtype_create_params(stmt, pgType));
                  set_nullfield_int2(&row->tuple[9], pgtype_unsigned(stmt, pgType));
                  set_nullfield_int2(&row->tuple[11], pgtype_auto_increment(stmt, pgType));
                  set_nullfield_int2(&row->tuple[13], pgtype_scale(stmt, pgType));
                  set_nullfield_int2(&row->tuple[14], pgtype_scale(stmt, pgType));

                  QR_add_tuple(stmt->result, row);
            }
      }


    stmt->status = STMT_FINISHED;
    stmt->currTuple = -1;
      stmt->rowset_start = -1;
      stmt->current_col = -1;

    return SQL_SUCCESS;
}

/*//      -       -       -       -       -       -       -       -       - */

RETCODE SQL_API SQLGetFunctions(
        HDBC      hdbc,
        UWORD     fFunction,
        UWORD FAR *pfExists)
{
static char *func="SQLGetFunctions";

      mylog( "%s: entering...\n", func);

    if (fFunction == SQL_API_ALL_FUNCTIONS) {

            if (globals.lie) {
                  int i;
                  memset(pfExists, 0, sizeof(UWORD)*100);

                  pfExists[SQL_API_SQLALLOCENV] = TRUE;
                  pfExists[SQL_API_SQLFREEENV] = TRUE;
                  for (i = SQL_API_SQLALLOCCONNECT; i <= 99; i++)
                        pfExists[i] = TRUE;
                  for (i = 1; i <= 99; i++)
                        pfExists[i] = TRUE;
            }
            else {
                  memset(pfExists, 0, sizeof(UWORD)*100);

                  /*// ODBC core functions */
                  pfExists[SQL_API_SQLALLOCCONNECT]     = TRUE;
                  pfExists[SQL_API_SQLALLOCENV]         = TRUE;
                  pfExists[SQL_API_SQLALLOCSTMT]        = TRUE;
                  pfExists[SQL_API_SQLBINDCOL]          = TRUE;
                  pfExists[SQL_API_SQLCANCEL]           = TRUE;
                  pfExists[SQL_API_SQLCOLATTRIBUTES]    = TRUE;
                  pfExists[SQL_API_SQLCONNECT]          = TRUE;
                  pfExists[SQL_API_SQLDESCRIBECOL]      = TRUE;  /*// partial */
                  pfExists[SQL_API_SQLDISCONNECT]       = TRUE;
                  pfExists[SQL_API_SQLERROR]            = TRUE;
                  pfExists[SQL_API_SQLEXECDIRECT]       = TRUE;
                  pfExists[SQL_API_SQLEXECUTE]          = TRUE;
                  pfExists[SQL_API_SQLFETCH]            = TRUE;
                  pfExists[SQL_API_SQLFREECONNECT]      = TRUE;
                  pfExists[SQL_API_SQLFREEENV]          = TRUE;
                  pfExists[SQL_API_SQLFREESTMT]         = TRUE;
                  pfExists[SQL_API_SQLGETCURSORNAME]    = TRUE;
                  pfExists[SQL_API_SQLNUMRESULTCOLS]    = TRUE;
                  pfExists[SQL_API_SQLPREPARE]          = TRUE;  /*// complete? */
                  pfExists[SQL_API_SQLROWCOUNT]         = TRUE;
                  pfExists[SQL_API_SQLSETCURSORNAME]    = TRUE;
                  pfExists[SQL_API_SQLSETPARAM]         = FALSE; /*// odbc 1.0 */
                  pfExists[SQL_API_SQLTRANSACT]         = TRUE;

                  /*// ODBC level 1 functions */
                  pfExists[SQL_API_SQLBINDPARAMETER]    = TRUE;
                  pfExists[SQL_API_SQLCOLUMNS]          = TRUE;
                  pfExists[SQL_API_SQLDRIVERCONNECT]    = TRUE;
                  pfExists[SQL_API_SQLGETCONNECTOPTION] = TRUE;  /*// partial */
                  pfExists[SQL_API_SQLGETDATA]          = TRUE;
                  pfExists[SQL_API_SQLGETFUNCTIONS]     = TRUE;
                  pfExists[SQL_API_SQLGETINFO]          = TRUE;
                  pfExists[SQL_API_SQLGETSTMTOPTION]    = TRUE;  /*// partial */
                  pfExists[SQL_API_SQLGETTYPEINFO]      = TRUE;
                  pfExists[SQL_API_SQLPARAMDATA]        = TRUE;
                  pfExists[SQL_API_SQLPUTDATA]          = TRUE;
                  pfExists[SQL_API_SQLSETCONNECTOPTION] = TRUE;  /*// partial */
                  pfExists[SQL_API_SQLSETSTMTOPTION]    = TRUE;
                  pfExists[SQL_API_SQLSPECIALCOLUMNS]   = TRUE;
                  pfExists[SQL_API_SQLSTATISTICS]       = TRUE;
                  pfExists[SQL_API_SQLTABLES]           = TRUE;

                  /*// ODBC level 2 functions */
                  pfExists[SQL_API_SQLBROWSECONNECT]    = FALSE;
                  pfExists[SQL_API_SQLCOLUMNPRIVILEGES] = FALSE;
                  pfExists[SQL_API_SQLDATASOURCES]      = FALSE;  /*// only implemented by DM */
                  pfExists[SQL_API_SQLDESCRIBEPARAM]    = FALSE;  /*// not properly implemented */
                  pfExists[SQL_API_SQLDRIVERS]          = FALSE;  /*// only implemented by DM */
                  pfExists[SQL_API_SQLEXTENDEDFETCH]    = TRUE;
                  pfExists[SQL_API_SQLFOREIGNKEYS]      = TRUE;
                  pfExists[SQL_API_SQLMORERESULTS]      = TRUE;
                  pfExists[SQL_API_SQLNATIVESQL]        = TRUE;
                  pfExists[SQL_API_SQLNUMPARAMS]        = TRUE;
                  pfExists[SQL_API_SQLPARAMOPTIONS]     = FALSE;
                  pfExists[SQL_API_SQLPRIMARYKEYS]      = TRUE;
                  pfExists[SQL_API_SQLPROCEDURECOLUMNS] = FALSE;
                  pfExists[SQL_API_SQLPROCEDURES]       = FALSE;
                  pfExists[SQL_API_SQLSETPOS]           = TRUE;
                  pfExists[SQL_API_SQLSETSCROLLOPTIONS] = TRUE;   /*// odbc 1.0 */
                  pfExists[SQL_API_SQLTABLEPRIVILEGES]  = FALSE;
            }
    } else {

            if (globals.lie)
                  *pfExists = TRUE;

            else {

                  switch(fFunction) {
                  case SQL_API_SQLALLOCCONNECT:     *pfExists = TRUE; break;
                  case SQL_API_SQLALLOCENV:         *pfExists = TRUE; break;
                  case SQL_API_SQLALLOCSTMT:        *pfExists = TRUE; break;
                  case SQL_API_SQLBINDCOL:          *pfExists = TRUE; break;
                  case SQL_API_SQLCANCEL:           *pfExists = TRUE; break;
                  case SQL_API_SQLCOLATTRIBUTES:    *pfExists = TRUE; break;
                  case SQL_API_SQLCONNECT:          *pfExists = TRUE; break;
                  case SQL_API_SQLDESCRIBECOL:      *pfExists = TRUE; break;  /*// partial */
                  case SQL_API_SQLDISCONNECT:       *pfExists = TRUE; break;
                  case SQL_API_SQLERROR:            *pfExists = TRUE; break;
                  case SQL_API_SQLEXECDIRECT:       *pfExists = TRUE; break;
                  case SQL_API_SQLEXECUTE:          *pfExists = TRUE; break;
                  case SQL_API_SQLFETCH:            *pfExists = TRUE; break;
                  case SQL_API_SQLFREECONNECT:      *pfExists = TRUE; break;
                  case SQL_API_SQLFREEENV:          *pfExists = TRUE; break;
                  case SQL_API_SQLFREESTMT:         *pfExists = TRUE; break;
                  case SQL_API_SQLGETCURSORNAME:    *pfExists = TRUE; break;
                  case SQL_API_SQLNUMRESULTCOLS:    *pfExists = TRUE; break;
                  case SQL_API_SQLPREPARE:          *pfExists = TRUE; break;
                  case SQL_API_SQLROWCOUNT:         *pfExists = TRUE; break;
                  case SQL_API_SQLSETCURSORNAME:    *pfExists = TRUE; break;
                  case SQL_API_SQLSETPARAM:         *pfExists = FALSE; break; /*// odbc 1.0 */
                  case SQL_API_SQLTRANSACT:         *pfExists = TRUE; break;

                        /*// ODBC level 1 functions */
                  case SQL_API_SQLBINDPARAMETER:    *pfExists = TRUE; break;
                  case SQL_API_SQLCOLUMNS:          *pfExists = TRUE; break;
                  case SQL_API_SQLDRIVERCONNECT:    *pfExists = TRUE; break;
                  case SQL_API_SQLGETCONNECTOPTION: *pfExists = TRUE; break;  /*// partial */
                  case SQL_API_SQLGETDATA:          *pfExists = TRUE; break;
                  case SQL_API_SQLGETFUNCTIONS:     *pfExists = TRUE; break;
                  case SQL_API_SQLGETINFO:          *pfExists = TRUE; break;
                  case SQL_API_SQLGETSTMTOPTION:    *pfExists = TRUE; break;  /*// partial */
                  case SQL_API_SQLGETTYPEINFO:      *pfExists = TRUE; break;
                  case SQL_API_SQLPARAMDATA:        *pfExists = TRUE; break;
                  case SQL_API_SQLPUTDATA:          *pfExists = TRUE; break;
                  case SQL_API_SQLSETCONNECTOPTION: *pfExists = TRUE; break;  /*// partial */
                  case SQL_API_SQLSETSTMTOPTION:    *pfExists = TRUE; break;
                  case SQL_API_SQLSPECIALCOLUMNS:   *pfExists = TRUE; break;
                  case SQL_API_SQLSTATISTICS:       *pfExists = TRUE; break;
                  case SQL_API_SQLTABLES:           *pfExists = TRUE; break;

                        /*// ODBC level 2 functions */
                  case SQL_API_SQLBROWSECONNECT:    *pfExists = FALSE; break;
                  case SQL_API_SQLCOLUMNPRIVILEGES: *pfExists = FALSE; break;
                  case SQL_API_SQLDATASOURCES:      *pfExists = FALSE; break;  /*// only implemented by DM */
                  case SQL_API_SQLDESCRIBEPARAM:    *pfExists = FALSE; break;  /*// not properly implemented */
                  case SQL_API_SQLDRIVERS:          *pfExists = FALSE; break;  /*// only implemented by DM */
                  case SQL_API_SQLEXTENDEDFETCH:    *pfExists = TRUE; break;
                  case SQL_API_SQLFOREIGNKEYS:      *pfExists = TRUE; break;
                  case SQL_API_SQLMORERESULTS:      *pfExists = TRUE; break;
                  case SQL_API_SQLNATIVESQL:        *pfExists = TRUE; break;
                  case SQL_API_SQLNUMPARAMS:        *pfExists = TRUE; break;
                  case SQL_API_SQLPARAMOPTIONS:     *pfExists = FALSE; break;
                  case SQL_API_SQLPRIMARYKEYS:      *pfExists = TRUE; break;
                  case SQL_API_SQLPROCEDURECOLUMNS: *pfExists = FALSE; break;
                  case SQL_API_SQLPROCEDURES:       *pfExists = FALSE; break;
                  case SQL_API_SQLSETPOS:           *pfExists = TRUE; break;
                  case SQL_API_SQLSETSCROLLOPTIONS: *pfExists = TRUE; break;  /*// odbc 1.0 */
                  case SQL_API_SQLTABLEPRIVILEGES:  *pfExists = FALSE; break;
                  }
            }
    }

    return SQL_SUCCESS;
}



RETCODE SQL_API SQLTables(
                          HSTMT       hstmt,
                          UCHAR FAR * szTableQualifier,
                          SWORD       cbTableQualifier,
                          UCHAR FAR * szTableOwner,
                          SWORD       cbTableOwner,
                          UCHAR FAR * szTableName,
                          SWORD       cbTableName,
                          UCHAR FAR * szTableType,
                          SWORD       cbTableType)
{
static char *func = "SQLTables";
StatementClass *stmt = (StatementClass *) hstmt;
StatementClass *tbl_stmt;
TupleNode *row;
HSTMT htbl_stmt;
RETCODE result;
char *tableType;
char tables_query[MAX_STATEMENT_LEN];
char table_name[MAX_INFO_STRING], table_owner[MAX_INFO_STRING], relhasrules[MAX_INFO_STRING];
ConnInfo *ci;
char *prefix[32], prefixes[MEDIUM_REGISTRY_LEN];
char *table_type[32], table_types[MAX_INFO_STRING];
char show_system_tables, show_regular_tables, show_views;
char regular_table, view, systable;
int i;

      mylog("%s: entering...stmt=%u\n", func, stmt);

      if( ! stmt) {
            SC_log_error(func, "", NULL);
            return SQL_INVALID_HANDLE;
      }

      stmt->manual_result = TRUE;
      stmt->errormsg_created = TRUE;

      ci = &stmt->hdbc->connInfo;

      result = PG__SQLAllocStmt( stmt->hdbc, &htbl_stmt);
      if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errornumber = STMT_NO_MEMORY_ERROR;
            stmt->errormsg = "Couldn't allocate statement for SQLTables result.";
            SC_log_error(func, "", stmt);
            return SQL_ERROR;
      }
      tbl_stmt = (StatementClass *) htbl_stmt;

      /*// ********************************************************************** */
      /*//  Create the query to find out the tables */
      /*// ********************************************************************** */

      strcpy(tables_query, "select relname, usename, relhasrules from pg_class, pg_user");
      strcat(tables_query, " where relkind = 'r'");

      my_strcat(tables_query, " and usename like '%.*s'", (char*)szTableOwner, cbTableOwner);
      my_strcat(tables_query, " and relname like '%.*s'", (char*)szTableName, cbTableName);


      /*//  Parse the extra systable prefix */
      strcpy(prefixes, globals.extra_systable_prefixes);
      i = 0;
      prefix[i] = strtok(prefixes, ";");
      while (prefix[i] && i<32) {
            prefix[++i] = strtok(NULL, ";");
      }

      /*    Parse the desired table types to return */
      show_system_tables = FALSE;
      show_regular_tables = FALSE;
      show_views = FALSE;

      /*    make_string mallocs memory */
      tableType = make_string((char*)szTableType, cbTableType, NULL);
      if (tableType) {
            strcpy(table_types, tableType);
            free(tableType);
            i = 0;
            table_type[i] = strtok(table_types, ",");
            while (table_type[i] && i<32) {
                  table_type[++i] = strtok(NULL, ",");
            }

            /*    Check for desired table types to return */
            i = 0;
            while (table_type[i]) {
                  if ( strstr(table_type[i], "SYSTEM TABLE"))
                        show_system_tables = TRUE;
                  else if ( strstr(table_type[i], "TABLE"))
                        show_regular_tables = TRUE;
                  else if ( strstr(table_type[i], "VIEW"))
                        show_views = TRUE;

                  i++;
            }
      }
      else {
            show_regular_tables = TRUE;
            show_views = TRUE;
      }

      /*  If not interested in SYSTEM TABLES then filter them out
            to save some time on the query.  If treating system tables
            as regular tables, then dont filter either.
      */
      if ( ! atoi(ci->show_system_tables) && ! show_system_tables) {
            strcat(tables_query, " and relname !~ '^" POSTGRES_SYS_PREFIX);

            /*    Also filter out user-defined system table types */
            i = 0;
            while(prefix[i]) {
                  strcat(tables_query, "|^");
                  strcat(tables_query, prefix[i]);
                  i++;
            }

            strcat(tables_query, "'");
      }


      /*    filter out large objects unconditionally (they are not system tables) and match users */
      strcat(tables_query, " and relname !~ '^xinv[0-9]+'");
      strcat(tables_query, " and int4out(usesysid) = int4out(relowner)");
      strcat(tables_query, "order by relname");

      /*// ********************************************************************** */

      result = PG__SQLExecDirect(htbl_stmt, (unsigned char *) tables_query, strlen(tables_query));
      if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
            return SQL_ERROR;
      }

    result = PG__SQLBindCol(htbl_stmt, 1, SQL_C_CHAR,
                        table_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = tbl_stmt->errormsg;
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(htbl_stmt, 2, SQL_C_CHAR,
                        table_owner, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = tbl_stmt->errormsg;
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }
    result = PG__SQLBindCol(htbl_stmt, 3, SQL_C_CHAR,
                        relhasrules, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = tbl_stmt->errormsg;
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

      stmt->result = QR_Constructor();
      if(!stmt->result) {
            stmt->errormsg = "Couldn't allocate memory for SQLTables result.";
            stmt->errornumber = STMT_NO_MEMORY_ERROR;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
            return SQL_ERROR;
      }

    /*// the binding structure for a statement is not set up until */
    /*// a statement is actually executed, so we'll have to do this ourselves. */
      extend_bindings(stmt, 5);
      
    /*// set the field names */
      QR_set_num_fields(stmt->result, 5);
      QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 3, "TABLE_TYPE", PG_TYPE_TEXT, MAX_INFO_STRING);
      QR_set_field_info(stmt->result, 4, "REMARKS", PG_TYPE_TEXT, 254);

    /*// add the tuples */
      result = PG__SQLFetch(htbl_stmt);
      while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {

            /*    Determine if this table name is a system table.
                  If treating system tables as regular tables, then
                  no need to do this test.
            */          
            systable = FALSE;
            if( ! atoi(ci->show_system_tables)) {

                  if ( strncmp(table_name, POSTGRES_SYS_PREFIX, strlen(POSTGRES_SYS_PREFIX)) == 0)
                        systable = TRUE;

                  else {                  /* Check extra system table prefixes */
                        i = 0;
                        while (prefix[i]) {
                              mylog("table_name='%s', prefix[%d]='%s'\n", table_name, i, prefix[i]);
                              if (strncmp(table_name, prefix[i], strlen(prefix[i])) == 0) {
                                    systable = TRUE;
                                    break;
                              }
                              i++;
                        }
                  }
            }

            /*    Determine if the table name is a view */
            view = (relhasrules[0] == '1');

            /*    It must be a regular table */
            regular_table = ( ! systable && ! view);


            /*    Include the row in the result set if meets all criteria */
            /*    NOTE: Unsupported table types (i.e., LOCAL TEMPORARY, ALIAS, etc)
                              will return nothing */
            if ( (systable && show_system_tables) ||
                   (view && show_views) ||
                   (regular_table && show_regular_tables)) {

                  row = (TupleNode *)malloc(sizeof(TupleNode) + (5 - 1) * sizeof(TupleField));

                  set_tuplefield_string(&row->tuple[0], "");

                  /*// I have to hide the table owner from Access, otherwise it */
                  /*// insists on referring to the table as 'owner.table'. */
                  /*// (this is valid according to the ODBC SQL grammar, but */
                  /*// Postgres won't support it.) */
                  /*// set_tuplefield_string(&row->tuple[1], table_owner); */

                  mylog("SQLTables: table_name = '%s'\n", table_name);

                  set_tuplefield_string(&row->tuple[0], "");
                  set_tuplefield_string(&row->tuple[1], "");
                  set_tuplefield_string(&row->tuple[2], table_name);
                  set_tuplefield_string(&row->tuple[3], systable ? "SYSTEM TABLE" : (view ? "VIEW" : "TABLE"));
                  set_tuplefield_string(&row->tuple[4], "");

                  QR_add_tuple(stmt->result, row);
            }
            result = PG__SQLFetch(htbl_stmt);
    }
      if(result != SQL_NO_DATA_FOUND) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
            return SQL_ERROR;
      }

    /*// also, things need to think that this statement is finished so */
    /*// the results can be retrieved. */
      stmt->status = STMT_FINISHED;

    /*// set up the current tuple pointer for SQLFetch */
      stmt->currTuple = -1;
      stmt->rowset_start = -1;
      stmt->current_col = -1;

      PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
      mylog("SQLTables(): EXIT,  stmt=%u\n", stmt);
      return SQL_SUCCESS;
}




RETCODE SQL_API PG__SQLColumns(
                           HSTMT        hstmt,
                           UCHAR FAR *  szTableQualifier,
                           SWORD        cbTableQualifier,
                           UCHAR FAR *  szTableOwner,
                           SWORD        cbTableOwner,
                           UCHAR FAR *  szTableName,
                           SWORD        cbTableName,
                           UCHAR FAR *  szColumnName,
                           SWORD        cbColumnName)
{
static char *func = "SQLColumns";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
HSTMT hcol_stmt;
StatementClass *col_stmt;
char columns_query[MAX_STATEMENT_LEN];
RETCODE result;
char table_owner[MAX_INFO_STRING], table_name[MAX_INFO_STRING], field_name[MAX_INFO_STRING], field_type_name[MAX_INFO_STRING];
Int2 field_number, result_cols;
Int4 field_type, the_type, field_length, mod_length;
char not_null[MAX_INFO_STRING];
ConnInfo *ci;


      mylog("%s: entering...stmt=%u\n", func, stmt);

      if( ! stmt) {
            SC_log_error(func, "", NULL);
            return SQL_INVALID_HANDLE;
      }

      stmt->manual_result = TRUE;
      stmt->errormsg_created = TRUE;

      ci = &stmt->hdbc->connInfo;

      /*// ********************************************************************** */
      /*//  Create the query to find out the columns (Note: pre 6.3 did not have the atttypmod field) */
      /*// ********************************************************************** */
      sprintf(columns_query, "select u.usename, c.relname, a.attname, a.atttypid,t.typname, a.attnum, a.attlen, %s, a.attnotnull from pg_user u, pg_class c, pg_attribute a, pg_type t where "
            "int4out(u.usesysid) = int4out(c.relowner) and c.oid= a.attrelid and a.atttypid = t.oid and (a.attnum > 0)",
            PROTOCOL_62(ci) ? "a.attlen" : "a.atttypmod");

      my_strcat(columns_query, " and c.relname like '%.*s'", (char*)szTableName, cbTableName);
      my_strcat(columns_query, " and u.usename like '%.*s'", (char*)szTableOwner, cbTableOwner);
      my_strcat(columns_query, " and a.attname like '%.*s'", (char*)szColumnName, cbColumnName);

    /*// give the output in the order the columns were defined */
    /*// when the table was created */
    strcat(columns_query, " order by attnum");
      /*// ********************************************************************** */

    result = PG__SQLAllocStmt( stmt->hdbc, &hcol_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errornumber = STMT_NO_MEMORY_ERROR;
            stmt->errormsg = "Couldn't allocate statement for SQLColumns result.";
            SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }
      col_stmt = (StatementClass *) hcol_stmt;

      mylog("SQLColumns: hcol_stmt = %u, col_stmt = %u\n", hcol_stmt, col_stmt);

    result = PG__SQLExecDirect(hcol_stmt, (unsigned char *) columns_query,
                           strlen(columns_query));
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)hcol_stmt);
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 1, SQL_C_CHAR,
                        table_owner, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 2, SQL_C_CHAR,
                        table_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 3, SQL_C_CHAR,
                        field_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 4, SQL_C_LONG,
                        &field_type, 4, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 5, SQL_C_CHAR,
                        field_type_name, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 6, SQL_C_SHORT,
                        &field_number, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 7, SQL_C_LONG,
                        &field_length, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 8, SQL_C_LONG,
                        &mod_length, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(hcol_stmt, 9, SQL_C_CHAR,
                        not_null, MAX_INFO_STRING, NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    stmt->result = QR_Constructor();
    if(!stmt->result) {
            stmt->errormsg = "Couldn't allocate memory for SQLColumns result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    /*// the binding structure for a statement is not set up until */
    /*// a statement is actually executed, so we'll have to do this ourselves. */
      result_cols = 14;
    extend_bindings(stmt, result_cols);

    /*// set the field names */
    QR_set_num_fields(stmt->result, result_cols);
    QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "DATA_TYPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 5, "TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 6, "PRECISION", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 7, "LENGTH", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 8, "SCALE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 9, "RADIX", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 10, "NULLABLE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 11, "REMARKS", PG_TYPE_TEXT, 254);

      /*//  User defined fields */
    QR_set_field_info(stmt->result, 12, "DISPLAY_SIZE", PG_TYPE_INT4, 4);
      QR_set_field_info(stmt->result, 13, "FIELD_TYPE", PG_TYPE_INT4, 4);

      
      result = PG__SQLFetch(hcol_stmt);


      /*    Only show oid if option AND there are other columns AND
            its not being called by SQLStatistics .
            Always show OID if its a system table
      */

      if (result != SQL_ERROR && ! stmt->internal) {

            if (atoi(ci->show_oid_column) || strncmp(table_name, POSTGRES_SYS_PREFIX, strlen(POSTGRES_SYS_PREFIX)) == 0) {

                  /*    For OID fields */
                  the_type = PG_TYPE_OID;
                  row = (TupleNode *)malloc(sizeof(TupleNode) +
                                                        (result_cols - 1) * sizeof(TupleField));

                  set_tuplefield_string(&row->tuple[0], "");
                  /*// see note in SQLTables() */
                  /*//      set_tuplefield_string(&row->tuple[1], table_owner); */
                  set_tuplefield_string(&row->tuple[1], "");
                  set_tuplefield_string(&row->tuple[2], table_name);
                  set_tuplefield_string(&row->tuple[3], "oid");
                  set_tuplefield_int2(&row->tuple[4], pgtype_to_sqltype(stmt, the_type));
                  set_tuplefield_string(&row->tuple[5], "OID");

                  set_tuplefield_int4(&row->tuple[7], pgtype_length(stmt, the_type, PG_STATIC, PG_STATIC));
                  set_tuplefield_int4(&row->tuple[6], pgtype_precision(stmt, the_type, PG_STATIC, PG_STATIC));

                  set_nullfield_int2(&row->tuple[8], pgtype_scale(stmt, the_type));
                  set_nullfield_int2(&row->tuple[9], pgtype_radix(stmt, the_type));
                  set_tuplefield_int2(&row->tuple[10], SQL_NO_NULLS);
                  set_tuplefield_string(&row->tuple[11], "");

                  set_tuplefield_int4(&row->tuple[12], pgtype_display_size(stmt, the_type, PG_STATIC, PG_STATIC));
                  set_tuplefield_int4(&row->tuple[13], the_type);

                  QR_add_tuple(stmt->result, row);
            }

      }

    while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {
        row = (TupleNode *)malloc(sizeof(TupleNode) +
                                  (result_cols - 1) * sizeof(TupleField));


        set_tuplefield_string(&row->tuple[0], "");
        /*// see note in SQLTables() */
        /*//      set_tuplefield_string(&row->tuple[1], table_owner); */
        set_tuplefield_string(&row->tuple[1], "");
        set_tuplefield_string(&row->tuple[2], table_name);
        set_tuplefield_string(&row->tuple[3], field_name);
        set_tuplefield_int2(&row->tuple[4], pgtype_to_sqltype(stmt, field_type));
        set_tuplefield_string(&row->tuple[5], field_type_name);


            /*    Some Notes about Postgres Data Types:

                  VARCHAR - the length is stored in the pg_attribute.atttypmod field
                  BPCHAR  - the length is also stored as varchar is

            */
        if((field_type == PG_TYPE_VARCHAR) ||
               (field_type == PG_TYPE_BPCHAR)) {

                  if (mod_length >= 4)
                        mod_length -= 4;              /*// the length is in atttypmod - 4 */

                  if (mod_length > globals.max_varchar_size || mod_length <= 0)
                        mod_length = globals.max_varchar_size;

                  mylog("SQLColumns: field type is VARCHAR,BPCHAR: field_type = %d, mod_length = %d\n", field_type, mod_length);

            set_tuplefield_int4(&row->tuple[7], mod_length);
                  set_tuplefield_int4(&row->tuple[6], mod_length);
                  set_tuplefield_int4(&row->tuple[12], mod_length);
        } else {
                  mylog("SQLColumns: field type is OTHER: field_type = %d, pgtype_length = %d\n", field_type, pgtype_length(stmt, field_type, PG_STATIC, PG_STATIC));

            set_tuplefield_int4(&row->tuple[7], pgtype_length(stmt, field_type, PG_STATIC, PG_STATIC));
                  set_tuplefield_int4(&row->tuple[6], pgtype_precision(stmt, field_type, PG_STATIC, PG_STATIC));
                  set_tuplefield_int4(&row->tuple[12], pgtype_display_size(stmt, field_type, PG_STATIC, PG_STATIC));

        }

            set_nullfield_int2(&row->tuple[8], pgtype_scale(stmt, field_type));
            set_nullfield_int2(&row->tuple[9], pgtype_radix(stmt, field_type));
            set_tuplefield_int2(&row->tuple[10], (Int2) (not_null[0] == '1' ? SQL_NO_NULLS : pgtype_nullable(stmt, field_type)));
            set_tuplefield_string(&row->tuple[11], "");
            set_tuplefield_int4(&row->tuple[13], field_type);

        QR_add_tuple(stmt->result, row);


        result = PG__SQLFetch(hcol_stmt);

    }
    if(result != SQL_NO_DATA_FOUND) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)hcol_stmt);
            stmt->errornumber = col_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
        return SQL_ERROR;
    }

      /*//  Put the row version column at the end so it might not be */
      /*//  mistaken for a key field. */
      if ( ! stmt->internal && atoi(ci->row_versioning)) {
            /*    For Row Versioning fields */
            the_type = PG_TYPE_INT4;

            row = (TupleNode *)malloc(sizeof(TupleNode) +
                                                  (result_cols - 1) * sizeof(TupleField));

            set_tuplefield_string(&row->tuple[0], "");
            set_tuplefield_string(&row->tuple[1], "");
            set_tuplefield_string(&row->tuple[2], table_name);
            set_tuplefield_string(&row->tuple[3], "xmin");
            set_tuplefield_int2(&row->tuple[4], pgtype_to_sqltype(stmt, the_type));
            set_tuplefield_string(&row->tuple[5], pgtype_to_name(stmt, the_type));
            set_tuplefield_int4(&row->tuple[6], pgtype_precision(stmt, the_type, PG_STATIC, PG_STATIC));
            set_tuplefield_int4(&row->tuple[7], pgtype_length(stmt, the_type, PG_STATIC, PG_STATIC));
            set_nullfield_int2(&row->tuple[8], pgtype_scale(stmt, the_type));
            set_nullfield_int2(&row->tuple[9], pgtype_radix(stmt, the_type));
            set_tuplefield_int2(&row->tuple[10], SQL_NO_NULLS);
            set_tuplefield_string(&row->tuple[11], "");
            set_tuplefield_int4(&row->tuple[12], pgtype_display_size(stmt, the_type, PG_STATIC, PG_STATIC));
            set_tuplefield_int4(&row->tuple[13], the_type);

            QR_add_tuple(stmt->result, row);
      }

    /*// also, things need to think that this statement is finished so */
    /*// the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /*// set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
      stmt->rowset_start = -1;
      stmt->current_col = -1;

      PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
      mylog("SQLColumns(): EXIT,  stmt=%u\n", stmt);
    return SQL_SUCCESS;
}


RETCODE SQL_API SQLColumns(
                           HSTMT        hstmt,
                           UCHAR FAR *  szTableQualifier,
                           SWORD        cbTableQualifier,
                           UCHAR FAR *  szTableOwner,
                           SWORD        cbTableOwner,
                           UCHAR FAR *  szTableName,
                           SWORD        cbTableName,
                           UCHAR FAR *  szColumnName,
                           SWORD        cbColumnName)
{
    return PG__SQLColumns(
                           hstmt,
                           szTableQualifier,
                           cbTableQualifier,
                           szTableOwner,
                           cbTableOwner,
                           szTableName,
                           cbTableName,
                           szColumnName,
                           cbColumnName );
}

RETCODE SQL_API SQLSpecialColumns(
                                  HSTMT        hstmt,
                                  UWORD        fColType,
                                  UCHAR FAR *  szTableQualifier,
                                  SWORD        cbTableQualifier,
                                  UCHAR FAR *  szTableOwner,
                                  SWORD        cbTableOwner,
                                  UCHAR FAR *  szTableName,
                                  SWORD        cbTableName,
                                  UWORD        fScope,
                                  UWORD        fNullable)
{
static char *func = "SQLSpecialColumns";
TupleNode *row;
StatementClass *stmt = (StatementClass *) hstmt;
ConnInfo *ci;


mylog("%s: entering...stmt=%u\n", func, stmt);

    if( ! stmt) {
            SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
    }
      ci = &stmt->hdbc->connInfo;

      stmt->manual_result = TRUE;
    stmt->result = QR_Constructor();
    extend_bindings(stmt, 8);

    QR_set_num_fields(stmt->result, 8);
    QR_set_field_info(stmt->result, 0, "SCOPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 1, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "DATA_TYPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 3, "TYPE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "PRECISION", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 5, "LENGTH", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 6, "SCALE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 7, "PSEUDO_COLUMN", PG_TYPE_INT2, 2);

    /* use the oid value for the rowid */
    if(fColType == SQL_BEST_ROWID) {
        row = (TupleNode *)malloc(sizeof(TupleNode) + (8 - 1) * sizeof(TupleField));

        set_tuplefield_int2(&row->tuple[0], SQL_SCOPE_SESSION);
        set_tuplefield_string(&row->tuple[1], "oid");
        set_tuplefield_int2(&row->tuple[2], pgtype_to_sqltype(stmt, PG_TYPE_OID));
        set_tuplefield_string(&row->tuple[3], "OID");
        set_tuplefield_int4(&row->tuple[4], pgtype_precision(stmt, PG_TYPE_OID, PG_STATIC, PG_STATIC));
        set_tuplefield_int4(&row->tuple[5], pgtype_length(stmt, PG_TYPE_OID, PG_STATIC, PG_STATIC));
        set_tuplefield_int2(&row->tuple[6], pgtype_scale(stmt, PG_TYPE_OID));
        set_tuplefield_int2(&row->tuple[7], SQL_PC_PSEUDO);

        QR_add_tuple(stmt->result, row);

    } else if(fColType == SQL_ROWVER) {

            Int2 the_type = PG_TYPE_INT4;

            if (atoi(ci->row_versioning)) {
                  row = (TupleNode *)malloc(sizeof(TupleNode) + (8 - 1) * sizeof(TupleField));

                  set_tuplefield_null(&row->tuple[0]);
                  set_tuplefield_string(&row->tuple[1], "xmin");
                  set_tuplefield_int2(&row->tuple[2], pgtype_to_sqltype(stmt, the_type));
                  set_tuplefield_string(&row->tuple[3], pgtype_to_name(stmt, the_type));
                  set_tuplefield_int4(&row->tuple[4], pgtype_precision(stmt, the_type, PG_STATIC, PG_STATIC));
                  set_tuplefield_int4(&row->tuple[5], pgtype_length(stmt, the_type, PG_STATIC, PG_STATIC));
                  set_tuplefield_int2(&row->tuple[6], pgtype_scale(stmt, the_type));
                  set_tuplefield_int2(&row->tuple[7], SQL_PC_PSEUDO);

                  QR_add_tuple(stmt->result, row);
            }
      }
    stmt->status = STMT_FINISHED;
    stmt->currTuple = -1;
      stmt->rowset_start = -1;
      stmt->current_col = -1;

      mylog("SQLSpecialColumns(): EXIT,  stmt=%u\n", stmt);
    return SQL_SUCCESS;
}

RETCODE SQL_API SQLStatistics(
                              HSTMT         hstmt,
                              UCHAR FAR *   szTableQualifier,
                              SWORD         cbTableQualifier,
                              UCHAR FAR *   szTableOwner,
                              SWORD         cbTableOwner,
                              UCHAR FAR *   szTableName,
                              SWORD         cbTableName,
                              UWORD         fUnique,
                              UWORD         fAccuracy)
{
static char *func="SQLStatistics";
StatementClass *stmt = (StatementClass *) hstmt;
char index_query[MAX_STATEMENT_LEN];
HSTMT hindx_stmt;
RETCODE result;
char *table_name;
char index_name[MAX_INFO_STRING];
short fields_vector[8];
char isunique[10], isclustered[10];
SDWORD index_name_len, fields_vector_len;
TupleNode *row;
int i;
HSTMT hcol_stmt;
StatementClass *col_stmt, *indx_stmt;
char column_name[MAX_INFO_STRING];
char **column_names = 0;
Int4 column_name_len;
int total_columns = 0;
char error = TRUE;
ConnInfo *ci;
char buf[256];

mylog("%s: entering...stmt=%u\n", func, stmt);

    if( ! stmt) {
            SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
    }

      stmt->manual_result = TRUE;
      stmt->errormsg_created = TRUE;

      ci = &stmt->hdbc->connInfo;

    stmt->result = QR_Constructor();
    if(!stmt->result) {
        stmt->errormsg = "Couldn't allocate memory for SQLStatistics result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
            SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

    /*// the binding structure for a statement is not set up until */
    /*// a statement is actually executed, so we'll have to do this ourselves. */
    extend_bindings(stmt, 13);

    /*// set the field names */
    QR_set_num_fields(stmt->result, 13);
    QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "NON_UNIQUE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 4, "INDEX_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 5, "INDEX_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 6, "TYPE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 7, "SEQ_IN_INDEX", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 8, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 9, "COLLATION", PG_TYPE_CHAR, 1);
    QR_set_field_info(stmt->result, 10, "CARDINALITY", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 11, "PAGES", PG_TYPE_INT4, 4);
    QR_set_field_info(stmt->result, 12, "FILTER_CONDITION", PG_TYPE_TEXT, MAX_INFO_STRING);


    /*// only use the table name... the owner should be redundant, and */
    /*// we never use qualifiers. */
      table_name = make_string((char*)szTableName, cbTableName, NULL);
      if ( ! table_name) {
        stmt->errormsg = "No table name passed to SQLStatistics.";
        stmt->errornumber = STMT_INTERNAL_ERROR;
            SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

      /*// we need to get a list of the field names first, */
      /*// so we can return them later. */
      result = PG__SQLAllocStmt( stmt->hdbc, &hcol_stmt);
      if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = "SQLAllocStmt failed in SQLStatistics for columns.";
            stmt->errornumber = STMT_NO_MEMORY_ERROR;
            goto SEEYA;
      }

      col_stmt = (StatementClass *) hcol_stmt;

      /*    "internal" prevents SQLColumns from returning the oid if it is being shown.
            This would throw everything off.
      */
      col_stmt->internal = TRUE;
      result = PG__SQLColumns(hcol_stmt, (SQLCHAR*)"", 0, (SQLCHAR*)"", 0,
                        (SQLCHAR*)table_name, (SWORD) strlen(table_name), (SQLCHAR*)"", 0);
      col_stmt->internal = FALSE;

      if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = col_stmt->errormsg;        /*// "SQLColumns failed in SQLStatistics."; */
                  stmt->errornumber = col_stmt->errornumber;  /*// STMT_EXEC_ERROR; */
                  PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
                  goto SEEYA;
      }
      result = PG__SQLBindCol(hcol_stmt, 4, SQL_C_CHAR,
                        column_name, MAX_INFO_STRING, 
                        (SQLLEN*)&column_name_len);
      if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = col_stmt->errormsg;
            stmt->errornumber = col_stmt->errornumber;
            PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
            goto SEEYA;

      }

      result = PG__SQLFetch(hcol_stmt);
      while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {
            total_columns++;

            column_names =
            (char **)realloc(column_names,
                         total_columns * sizeof(char *));
            column_names[total_columns-1] =
            (char *)malloc(strlen(column_name)+1);
            strcpy(column_names[total_columns-1], column_name);

            mylog("SQLStatistics: column_name = '%s'\n", column_name);

            result = PG__SQLFetch(hcol_stmt);
      }
      if(result != SQL_NO_DATA_FOUND || total_columns == 0) {
                  stmt->errormsg = SC_create_errormsg((StatementClass*)hcol_stmt); /*// "Couldn't get column names in SQLStatistics."; */
                  stmt->errornumber = col_stmt->errornumber;
                  PG__SQLFreeStmt(hcol_stmt, SQL_DROP);
                  goto SEEYA;

      }
      
      PG__SQLFreeStmt(hcol_stmt, SQL_DROP);

    /*// get a list of indexes on this table */
    result = PG__SQLAllocStmt( stmt->hdbc, &hindx_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = "SQLAllocStmt failed in SQLStatistics for indices.";
            stmt->errornumber = STMT_NO_MEMORY_ERROR;
            goto SEEYA;

    }
      indx_stmt = (StatementClass *) hindx_stmt;

      sprintf(index_query, "select c.relname, i.indkey, i.indisunique, i.indisclustered from pg_index i, pg_class c, pg_class d where c.oid = i.indexrelid and d.relname = '%s' and d.oid = i.indrelid",
            table_name);

    result = PG__SQLExecDirect(hindx_stmt, (unsigned char *) index_query, strlen(index_query));
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)hindx_stmt); /*// "Couldn't execute index query (w/SQLExecDirect) in SQLStatistics."; */
            stmt->errornumber = indx_stmt->errornumber;
            PG__SQLFreeStmt(hindx_stmt, SQL_DROP);
            goto SEEYA;

    }

    /*// bind the index name column */
    result = PG__SQLBindCol(hindx_stmt, 1, SQL_C_CHAR,
                        index_name, MAX_INFO_STRING, 
                  (SQLLEN*) &index_name_len);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = indx_stmt->errormsg; /*// "Couldn't bind column in SQLStatistics."; */
            stmt->errornumber = indx_stmt->errornumber;
            PG__SQLFreeStmt(hindx_stmt, SQL_DROP);
            goto SEEYA;

    }
    /*// bind the vector column */
    result = PG__SQLBindCol(hindx_stmt, 2, SQL_C_DEFAULT,
                        fields_vector, 16, 
                  (SQLLEN*)&fields_vector_len);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = indx_stmt->errormsg;  /*// "Couldn't bind column in SQLStatistics."; */
            stmt->errornumber = indx_stmt->errornumber;
            PG__SQLFreeStmt(hindx_stmt, SQL_DROP);
            goto SEEYA;

    }
    /*// bind the "is unique" column */
    result = PG__SQLBindCol(hindx_stmt, 3, SQL_C_CHAR,
                        isunique, sizeof(isunique), NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = indx_stmt->errormsg;  /*// "Couldn't bind column in SQLStatistics."; */
            stmt->errornumber = indx_stmt->errornumber;
            PG__SQLFreeStmt(hindx_stmt, SQL_DROP);
            goto SEEYA;
    }

    /*// bind the "is clustered" column */
    result = PG__SQLBindCol(hindx_stmt, 4, SQL_C_CHAR,
                        isclustered, sizeof(isclustered), NULL);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = indx_stmt->errormsg;  /*// "Couldn't bind column in SQLStatistics."; */
            stmt->errornumber = indx_stmt->errornumber;
            PG__SQLFreeStmt(hindx_stmt, SQL_DROP);
            goto SEEYA;

    }

      /*    fake index of OID */
      if (atoi(ci->show_oid_column) && atoi(ci->fake_oid_index)) {
            row = (TupleNode *)malloc(sizeof(TupleNode) +
                                (13 - 1) * sizeof(TupleField));

            /*// no table qualifier */
            set_tuplefield_string(&row->tuple[0], "");
            /*// don't set the table owner, else Access tries to use it */
            set_tuplefield_string(&row->tuple[1], "");
            set_tuplefield_string(&row->tuple[2], table_name);

            /*// non-unique index? */
            set_tuplefield_int2(&row->tuple[3], (Int2) (globals.unique_index ? FALSE : TRUE));
            
            /*// no index qualifier */
            set_tuplefield_string(&row->tuple[4], "");

            sprintf(buf, "%s_idx_fake_oid", table_name);
            set_tuplefield_string(&row->tuple[5], buf);

            /*// Clustered index?  I think non-clustered should be type OTHER not HASHED */
            set_tuplefield_int2(&row->tuple[6], (Int2) SQL_INDEX_OTHER);
            set_tuplefield_int2(&row->tuple[7], (Int2) 1);

            set_tuplefield_string(&row->tuple[8], "oid");
            set_tuplefield_string(&row->tuple[9], "A");
            set_tuplefield_null(&row->tuple[10]);
            set_tuplefield_null(&row->tuple[11]);
            set_tuplefield_null(&row->tuple[12]);

            QR_add_tuple(stmt->result, row);
      }

    result = PG__SQLFetch(hindx_stmt);
    while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {

            /*//  If only requesting unique indexs, then just return those. */
            if (fUnique == SQL_INDEX_ALL ||
                  (fUnique == SQL_INDEX_UNIQUE && atoi(isunique))) {
                  i = 0;
                  /*// add a row in this table for each field in the index */
                  while(i < 8 && fields_vector[i] != 0) {

                        row = (TupleNode *)malloc(sizeof(TupleNode) +
                                            (13 - 1) * sizeof(TupleField));

                        /*// no table qualifier */
                        set_tuplefield_string(&row->tuple[0], "");
                        /*// don't set the table owner, else Access tries to use it */
                        set_tuplefield_string(&row->tuple[1], "");
                        set_tuplefield_string(&row->tuple[2], table_name);

                        /*// non-unique index? */
                        if (globals.unique_index)
                              set_tuplefield_int2(&row->tuple[3], (Int2) (atoi(isunique) ? FALSE : TRUE));
                        else
                              set_tuplefield_int2(&row->tuple[3], TRUE);
                        
                        /*// no index qualifier */
                        set_tuplefield_string(&row->tuple[4], "");
                        set_tuplefield_string(&row->tuple[5], index_name);

                        /*// Clustered index?  I think non-clustered should be type OTHER not HASHED */
                        set_tuplefield_int2(&row->tuple[6], (Int2) (atoi(isclustered) ? SQL_INDEX_CLUSTERED : SQL_INDEX_OTHER));
                        set_tuplefield_int2(&row->tuple[7], (Int2) (i+1));

                        if(fields_vector[i] == OID_ATTNUM) {
                              set_tuplefield_string(&row->tuple[8], "oid");
                              mylog("SQLStatistics: column name = oid\n");
                        }
                        else if(fields_vector[i] < 0 || fields_vector[i] > total_columns) {
                              set_tuplefield_string(&row->tuple[8], "UNKNOWN");
                              mylog("SQLStatistics: column name = UNKNOWN\n");
                        }
                        else {
                              set_tuplefield_string(&row->tuple[8], column_names[fields_vector[i]-1]);
                              mylog("SQLStatistics: column name = '%s'\n", column_names[fields_vector[i]-1]);
                        }

                        set_tuplefield_string(&row->tuple[9], "A");
                        set_tuplefield_null(&row->tuple[10]);
                        set_tuplefield_null(&row->tuple[11]);
                        set_tuplefield_null(&row->tuple[12]);

                        QR_add_tuple(stmt->result, row);
                        i++;
                  }
            }

        result = PG__SQLFetch(hindx_stmt);
    }
    if(result != SQL_NO_DATA_FOUND) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)hindx_stmt); /*// "SQLFetch failed in SQLStatistics."; */
            stmt->errornumber = indx_stmt->errornumber;
            PG__SQLFreeStmt(hindx_stmt, SQL_DROP);
            goto SEEYA;
    }

      PG__SQLFreeStmt(hindx_stmt, SQL_DROP);

    /*// also, things need to think that this statement is finished so */
    /*// the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /*// set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
      stmt->rowset_start = -1;
      stmt->current_col = -1;

      error = FALSE;

SEEYA:
      /* These things should be freed on any error ALSO! */
      free(table_name);
    for(i = 0; i < total_columns; i++) {
            free(column_names[i]);
    }
    free(column_names);

      mylog("SQLStatistics(): EXIT, %s, stmt=%u\n", error ? "error" : "success", stmt);

      if (error) {
            SC_log_error(func, "", stmt);
            return SQL_ERROR;
      }
      else
            return SQL_SUCCESS;
}

RETCODE SQL_API SQLColumnPrivileges(
                                    HSTMT        hstmt,
                                    UCHAR FAR *  szTableQualifier,
                                    SWORD        cbTableQualifier,
                                    UCHAR FAR *  szTableOwner,
                                    SWORD        cbTableOwner,
                                    UCHAR FAR *  szTableName,
                                    SWORD        cbTableName,
                                    UCHAR FAR *  szColumnName,
                                    SWORD        cbColumnName)
{
static char *func="SQLColumnPrivileges";

      mylog("%s: entering...\n", func);

/*    Neither Access or Borland care about this. */

      SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}



RETCODE SQL_API PG__SQLPrimaryKeys(
                               HSTMT         hstmt,
                               UCHAR FAR *   szTableQualifier,
                               SWORD         cbTableQualifier,
                               UCHAR FAR *   szTableOwner,
                               SWORD         cbTableOwner,
                               UCHAR FAR *   szTableName,
                               SWORD         cbTableName)
{
static char *func = "SQLPrimaryKeys";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
RETCODE result;
int seq = 0;
HSTMT htbl_stmt;
StatementClass *tbl_stmt;
char tables_query[MAX_STATEMENT_LEN];
char attname[MAX_INFO_STRING];
SDWORD attname_len;
char pktab[MAX_TABLE_LEN + 1];
Int2 result_cols;

      mylog("%s: entering...stmt=%u\n", func, stmt);

    if( ! stmt) {
            SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
    }
      stmt->manual_result = TRUE;
      stmt->errormsg_created = TRUE;

      /*** Moved error check here
           Christian Kirsch (ck@ix.heise.de)
           6/6/1999
      */
      pktab[0] = '\0';
      make_string((char*)szTableName, cbTableName, pktab);
      if ( pktab[0] == '\0') {
            stmt->errormsg = "No Table specified to SQLPrimaryKeys.";
          stmt->errornumber = STMT_INTERNAL_ERROR;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
            return SQL_ERROR;
      }

    stmt->result = QR_Constructor();
    if(!stmt->result) {
        stmt->errormsg = "Couldn't allocate memory for SQLPrimaryKeys result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
            SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

    /*// the binding structure for a statement is not set up until */
    /*// a statement is actually executed, so we'll have to do this ourselves. */
      result_cols = 6;
    extend_bindings(stmt, result_cols);
      
    /*// set the field names */
    QR_set_num_fields(stmt->result, result_cols);
    QR_set_field_info(stmt->result, 0, "TABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "TABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "TABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "COLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "KEY_SEQ", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 5, "PK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);


    result = PG__SQLAllocStmt( stmt->hdbc, &htbl_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errornumber = STMT_NO_MEMORY_ERROR;
            stmt->errormsg = "Couldn't allocate statement for Primary Key result.";
            SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }
      tbl_stmt = (StatementClass *) htbl_stmt;


      sprintf(tables_query, "select a.attname from pg_attribute a, pg_class c1, pg_class c2, pg_index i where c1.relname = '%s' and c1.oid = i.indrelid and i.indexrelid = c2.oid and a.attrelid = c2.oid", pktab);


/*** BEGIN
     changed to statement above - easier and more reliable.
     Christian Kirsch (ck@ix.heise.de), 6/6/1999

      sprintf(tables_query, "select distinct on attnum a2.attname, a2.attnum from pg_attribute a1, pg_attribute a2, pg_class c, pg_index i where c.relname = '%s_pkey' AND c.oid = i.indexrelid AND a1.attrelid = c.oid AND a2.attrelid = c.oid AND (i.indkey[0] = a1.attnum OR i.indkey[1] = a1.attnum OR i.indkey[2] = a1.attnum OR i.indkey[3] = a1.attnum OR i.indkey[4] = a1.attnum OR i.indkey[5] = a1.attnum OR i.indkey[6] = a1.attnum OR i.indkey[7] = a1.attnum) order by a2.attnum", pktab);

*** END */
      mylog("SQLPrimaryKeys: tables_query='%s'\n", tables_query);

    result = PG__SQLExecDirect(htbl_stmt, (unsigned char *) tables_query, strlen(tables_query));
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLBindCol(htbl_stmt, 1, SQL_C_CHAR,
                        attname, MAX_INFO_STRING, 
                  (SQLLEN*)&attname_len);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errormsg = tbl_stmt->errormsg;
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

    result = PG__SQLFetch(htbl_stmt);

    while((result == SQL_SUCCESS) || (result == SQL_SUCCESS_WITH_INFO)) {

        row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));

        set_tuplefield_null(&row->tuple[0]);

        /*// I have to hide the table owner from Access, otherwise it */
        /*// insists on referring to the table as 'owner.table'. */
        /*// (this is valid according to the ODBC SQL grammar, but */
        /*// Postgres won't support it.) */

        set_tuplefield_string(&row->tuple[1], "");
        set_tuplefield_string(&row->tuple[2], pktab);
        set_tuplefield_string(&row->tuple[3], attname);
            set_tuplefield_int2(&row->tuple[4], (Int2) (++seq));
            set_tuplefield_null(&row->tuple[5]);

        QR_add_tuple(stmt->result, row);

            mylog(">> primaryKeys: pktab = '%s', attname = '%s', seq = %d\n", pktab, attname, seq);

        result = PG__SQLFetch(htbl_stmt);
    }

    if(result != SQL_NO_DATA_FOUND) {
            stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
            stmt->errornumber = tbl_stmt->errornumber;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

      PG__SQLFreeStmt(htbl_stmt, SQL_DROP);


    /*// also, things need to think that this statement is finished so */
    /*// the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /*// set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
      stmt->rowset_start = -1;
      stmt->current_col = -1;

      mylog("SQLPrimaryKeys(): EXIT, stmt=%u\n", stmt);
    return SQL_SUCCESS;
}


RETCODE SQL_API SQLPrimaryKeys(
                               HSTMT         hstmt,
                               UCHAR FAR *   szTableQualifier,
                               SWORD         cbTableQualifier,
                               UCHAR FAR *   szTableOwner,
                               SWORD         cbTableOwner,
                               UCHAR FAR *   szTableName,
                               SWORD         cbTableName)
{
    return PG__SQLPrimaryKeys(
                               hstmt,
                               szTableQualifier,
                               cbTableQualifier,
                               szTableOwner,
                               cbTableOwner,
                               szTableName,
                               cbTableName );
}

RETCODE SQL_API SQLForeignKeys(
                               HSTMT         hstmt,
                               UCHAR FAR *   szPkTableQualifier,
                               SWORD         cbPkTableQualifier,
                               UCHAR FAR *   szPkTableOwner,
                               SWORD         cbPkTableOwner,
                               UCHAR FAR *   szPkTableName,
                               SWORD         cbPkTableName,
                               UCHAR FAR *   szFkTableQualifier,
                               SWORD         cbFkTableQualifier,
                               UCHAR FAR *   szFkTableOwner,
                               SWORD         cbFkTableOwner,
                               UCHAR FAR *   szFkTableName,
                               SWORD         cbFkTableName)
{
static char *func = "SQLForeignKeys";
StatementClass *stmt = (StatementClass *) hstmt;
TupleNode *row;
HSTMT htbl_stmt, hpkey_stmt;
StatementClass *tbl_stmt;
RETCODE result, keyresult;
char tables_query[MAX_STATEMENT_LEN];
char args[1024], tgname[MAX_INFO_STRING];
char pktab[MAX_TABLE_LEN + 1], fktab[MAX_TABLE_LEN + 1];
char *ptr, *pkey_ptr, *pkptr, *fkptr, *frel, *prel;
int i, k, pkeys, seq, ntabs;
SWORD nargs, rule_type, action;
char pkey[MAX_INFO_STRING];
Int2 result_cols;


      mylog("%s: entering...stmt=%u\n", func, stmt);


      if( ! stmt) {
        SC_log_error(func, "", NULL);
        return SQL_INVALID_HANDLE;
      }
      stmt->manual_result = TRUE;
      stmt->errormsg_created = TRUE;
      
      stmt->result = QR_Constructor();
      if(!stmt->result) {
        stmt->errormsg = "Couldn't allocate memory for SQLForeignKeys result.";
        stmt->errornumber = STMT_NO_MEMORY_ERROR;
        SC_log_error(func, "", stmt);
        PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
        return SQL_ERROR;
    }

      /*// the binding structure for a statement is not set up until */
      /*// a statement is actually executed, so we'll have to do this ourselves. */
      result_cols = 14;
    extend_bindings(stmt, result_cols);

    /*// set the field names */
    QR_set_num_fields(stmt->result, result_cols);
    QR_set_field_info(stmt->result, 0, "PKTABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 1, "PKTABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 2, "PKTABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 3, "PKCOLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 4, "FKTABLE_QUALIFIER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 5, "FKTABLE_OWNER", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 6, "FKTABLE_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 7, "FKCOLUMN_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 8, "KEY_SEQ", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 9, "UPDATE_RULE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 10, "DELETE_RULE", PG_TYPE_INT2, 2);
    QR_set_field_info(stmt->result, 11, "FK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 12, "PK_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);
    QR_set_field_info(stmt->result, 13, "TRIGGER_NAME", PG_TYPE_TEXT, MAX_INFO_STRING);

    /*// also, things need to think that this statement is finished so */
    /*// the results can be retrieved. */
    stmt->status = STMT_FINISHED;

    /*// set up the current tuple pointer for SQLFetch */
    stmt->currTuple = -1;
      stmt->rowset_start = -1;
      stmt->current_col = -1;


    result = PG__SQLAllocStmt( stmt->hdbc, &htbl_stmt);
    if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
            stmt->errornumber = STMT_NO_MEMORY_ERROR;
            stmt->errormsg = "Couldn't allocate statement for SQLForeignKeys result.";
            SC_log_error(func, "", stmt);
        return SQL_ERROR;
    }

      tbl_stmt = (StatementClass *) htbl_stmt;

      pktab[0] = '\0';
      fktab[0] = '\0';

      make_string((char*)szPkTableName, cbPkTableName, pktab);
      make_string((char*)szFkTableName, cbFkTableName, fktab);


      /*    Case #2 -- Get the foreign keys in the specified table (fktab) that
            refer to the primary keys of other table(s).
      */
      if (fktab[0] != '\0') {

            sprintf(tables_query, "select pg_trigger.tgargs, pg_trigger.tgnargs, pg_trigger.tgname from pg_proc, pg_trigger, pg_class where pg_proc.oid = pg_trigger.tgfoid and pg_trigger.tgrelid = pg_class.oid AND pg_proc.proname = 'check_primary_key' AND pg_class.relname = '%s'",
                  fktab);

            result = PG__SQLExecDirect(htbl_stmt, (unsigned char *) tables_query, strlen(tables_query));
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLBindCol(htbl_stmt, 1, SQL_C_BINARY,
                                          args, MAX_INFO_STRING, NULL);
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = tbl_stmt->errormsg;
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLBindCol(htbl_stmt, 2, SQL_C_SHORT,
                                          &nargs, 0, NULL);
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = tbl_stmt->errormsg;
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLBindCol(htbl_stmt, 3, SQL_C_CHAR,
                                          tgname, sizeof(tgname), NULL);
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = tbl_stmt->errormsg;
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLFetch(htbl_stmt);
            if (result == SQL_NO_DATA_FOUND)
                  return SQL_SUCCESS;

            if(result != SQL_SUCCESS) {
                  stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            keyresult = PG__SQLAllocStmt( stmt->hdbc, &hpkey_stmt);
            if((keyresult != SQL_SUCCESS) && (keyresult != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errornumber = STMT_NO_MEMORY_ERROR;
                  stmt->errormsg = "Couldn't allocate statement for SQLForeignKeys (pkeys) result.";
                  SC_log_error(func, "", stmt);
                  return SQL_ERROR;
            }

            keyresult = PG__SQLBindCol(hpkey_stmt, 4, SQL_C_CHAR,
                                                pkey, sizeof(pkey), NULL);
            if (keyresult != SQL_SUCCESS) {
                  stmt->errornumber = STMT_NO_MEMORY_ERROR;
                  stmt->errormsg = "Couldn't bindcol for primary keys for SQLForeignKeys result.";
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(hpkey_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            while (result == SQL_SUCCESS) {

                  /*    Compute the number of keyparts.     */
                  pkeys = nargs / 2;

                  mylog("Foreign Key Case#2: nargs = %d, pkeys = %d\n", nargs, pkeys);

                  ptr = args;

                  /*    Get to the PK Table Name */
                  for (k = 0; k < pkeys; k++)
                        ptr += strlen(ptr) + 1;

                  prel = ptr;

                  mylog("prel = '%s'\n", prel);

                  /*    If there is a pk table specified, then check it. */
                  if (pktab[0] != '\0') {

                        /*    If it doesn't match, then continue */
                        if ( strcmp(prel, pktab)) {   
                              result = PG__SQLFetch(htbl_stmt);
                              continue;
                        }
                  }

                  keyresult = PG__SQLPrimaryKeys(hpkey_stmt, NULL, 0, NULL, 0, 
                    (SQLCHAR*)prel, SQL_NTS);
                  if (keyresult != SQL_SUCCESS) {
                        stmt->errornumber = STMT_NO_MEMORY_ERROR;
                        stmt->errormsg = "Couldn't get primary keys for SQLForeignKeys result.";
                        SC_log_error(func, "", stmt);
                        PG__SQLFreeStmt(hpkey_stmt, SQL_DROP);
                        return SQL_ERROR;
                  }


                  /*    Check that the key listed is the primary key */
                  keyresult = PG__SQLFetch(hpkey_stmt);
                  for (k = 0; k < pkeys; k++) {

                        ptr += strlen(ptr) + 1;
                        if ( keyresult != SQL_SUCCESS || strcmp(ptr, pkey)) {
                              pkeys = 0;
                              break;
                        }
                        keyresult = PG__SQLFetch(hpkey_stmt);
                  }
                  ptr = prel;



                  /*    Set to first fk column */
                  fkptr = args;
                  seq = 0;

                  for (k = 0; k < pkeys; k++) {

                        row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));

                        set_tuplefield_null(&row->tuple[0]);
                        set_tuplefield_string(&row->tuple[1], "");

                        set_tuplefield_string(&row->tuple[2], prel);

                        /*//  Get to the primary key */
                        ptr += strlen(ptr) + 1;

                        mylog("prel = '%s', ptr = '%s'\n", prel, ptr);

                        set_tuplefield_string(&row->tuple[3], ptr);
                        set_tuplefield_null(&row->tuple[4]);
                        set_tuplefield_string(&row->tuple[5], "");

                        set_tuplefield_string(&row->tuple[6], fktab);
                        set_tuplefield_string(&row->tuple[7], fkptr);

                        mylog("fktab = '%s', fkptr = '%s'\n", fktab, fkptr);

                        set_tuplefield_int2(&row->tuple[8], (Int2) (++seq));
                        set_tuplefield_null(&row->tuple[9]);
                        set_tuplefield_null(&row->tuple[10]);
                        set_tuplefield_null(&row->tuple[11]);
                        set_tuplefield_null(&row->tuple[12]);

                        set_tuplefield_string(&row->tuple[13], tgname);

                        QR_add_tuple(stmt->result, row);

                        /*//  next foreign key */
                        fkptr += strlen(fkptr) + 1;

                  }

                  result = PG__SQLFetch(htbl_stmt);
            }
      }

      /*    Case #1 -- Get the foreign keys in other tables that refer to the primary key
            in the specified table (pktab).  i.e., Who points to me?
      */
    else if (pktab[0] != '\0') {

            sprintf(tables_query, "select pg_trigger.tgargs, pg_trigger.tgnargs, pg_trigger.tgtype, pg_trigger.tgname from pg_proc, pg_trigger, pg_class where pg_proc.oid = pg_trigger.tgfoid and pg_trigger.tgrelid = pg_class.oid AND pg_proc.proname = 'check_foreign_key' AND pg_class.relname = '%s'",
                  pktab);

            result = PG__SQLExecDirect(htbl_stmt, (unsigned char *) tables_query, strlen(tables_query));
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLBindCol(htbl_stmt, 1, SQL_C_BINARY,
                                          args, sizeof(args), NULL);
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = tbl_stmt->errormsg;
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLBindCol(htbl_stmt, 2, SQL_C_SHORT,
                                          &nargs, 0, NULL);
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = tbl_stmt->errormsg;
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLBindCol(htbl_stmt, 3, SQL_C_SHORT,
                                          &rule_type, 0, NULL);
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = tbl_stmt->errormsg;
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLBindCol(htbl_stmt, 4, SQL_C_CHAR,
                                          tgname, sizeof(tgname), NULL);
            if((result != SQL_SUCCESS) && (result != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errormsg = tbl_stmt->errormsg;
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            result = PG__SQLFetch(htbl_stmt);
            if (result == SQL_NO_DATA_FOUND)
                  return SQL_SUCCESS;

            if(result != SQL_SUCCESS) {
                  stmt->errormsg = SC_create_errormsg((StatementClass*)htbl_stmt);
                  stmt->errornumber = tbl_stmt->errornumber;
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            keyresult = PG__SQLAllocStmt( stmt->hdbc, &hpkey_stmt);
            if((keyresult != SQL_SUCCESS) && (keyresult != SQL_SUCCESS_WITH_INFO)) {
                  stmt->errornumber = STMT_NO_MEMORY_ERROR;
                  stmt->errormsg = "Couldn't allocate statement for SQLForeignKeys (pkeys) result.";
                  SC_log_error(func, "", stmt);
                  return SQL_ERROR;
            }

            keyresult = PG__SQLPrimaryKeys(hpkey_stmt, NULL, 0, NULL, 0, (SQLCHAR*)pktab, SQL_NTS);
            if (keyresult != SQL_SUCCESS) {
                  stmt->errornumber = STMT_NO_MEMORY_ERROR;
                  stmt->errormsg = "Couldn't get primary keys for SQLForeignKeys result.";
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(hpkey_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            keyresult = PG__SQLBindCol(hpkey_stmt, 4, SQL_C_CHAR,
                                                pkey, sizeof(pkey), NULL);
            if (keyresult != SQL_SUCCESS) {
                  stmt->errornumber = STMT_NO_MEMORY_ERROR;
                  stmt->errormsg = "Couldn't bindcol for primary keys for SQLForeignKeys result.";
                  SC_log_error(func, "", stmt);
                  PG__SQLFreeStmt(hpkey_stmt, SQL_DROP);
                  return SQL_ERROR;
            }

            while (result == SQL_SUCCESS) {
                  /*//  Get the number of tables */
                  ptr = args;
                  ntabs = atoi(args);
                  ptr += strlen(ptr) + 1;


                  /*//  Handle action (i.e., 'cascade', 'restrict', 'setnull') */
                  switch(tolower(ptr[0])) {
                  case 'c':   
                        action = SQL_CASCADE;
                        break;
                  case 'r':
                        action = SQL_RESTRICT;
                        break;
                  case 's':
                        action = SQL_SET_NULL;
                        break;
                  default:
                        action = -1;
                        break;
                  }

                  rule_type >>= TRIGGER_SHIFT;
                  ptr += strlen(ptr) + 1;

                  /*//  Calculate the number of key parts */
                  pkeys = (nargs - ( 2 + ntabs)) / (ntabs + 1);
                  pkey_ptr = ptr;


                  keyresult = PG__SQLExtendedFetch(hpkey_stmt, SQL_FETCH_FIRST, -1, NULL, NULL);
                  if ( keyresult != SQL_SUCCESS || strcmp(pkey, ptr)) {
                        ntabs = 0;
                  }

                  /*//  Get to the last primary keypart */
                  for (i = 1; i < pkeys; i++) {

                        /*//  If keypart doesnt match, skip this entry */
                        if ( keyresult != SQL_SUCCESS || strcmp(pkey, ptr)) {
                              ntabs = 0;
                              break;
                        }
                        ptr += strlen(ptr) + 1;

                        keyresult = PG__SQLExtendedFetch(hpkey_stmt, SQL_FETCH_NEXT, -1, NULL, NULL);
                  }
                        
                  mylog("Foreign Key Case#1: nargs = %d, ntabs = %d, pkeys = %d\n", nargs, ntabs, pkeys);


                  /*//  Get Foreign Key Tables */
                  for (i = 0; i < ntabs; i++) {

                        seq = 0;
                        pkptr = pkey_ptr;

                        ptr += strlen(ptr) + 1;
                        frel = ptr;

                        for (k = 0; k < pkeys; k++) {

                              row = (TupleNode *)malloc(sizeof(TupleNode) + (result_cols - 1) * sizeof(TupleField));

                              set_tuplefield_null(&row->tuple[0]);
                              set_tuplefield_string(&row->tuple[1], "");

                              set_tuplefield_string(&row->tuple[2], pktab);
                              set_tuplefield_string(&row->tuple[3], pkptr);

                              mylog("pktab = '%s', pkptr = '%s'\n", pktab, pkptr);

                              set_tuplefield_null(&row->tuple[4]);
                              set_tuplefield_string(&row->tuple[5], "");
                              set_tuplefield_string(&row->tuple[6], frel);

                              /*//  Get to the foreign key */
                              ptr += strlen(ptr) + 1;

                              set_tuplefield_string(&row->tuple[7], ptr);

                              mylog("frel = '%s', ptr = '%s'\n", frel, ptr);
                              mylog("rule_type = %d, action = %d\n", rule_type, action);

                              set_tuplefield_int2(&row->tuple[8], (Int2) (++seq));

                              set_nullfield_int2(&row->tuple[9], (Int2) ((rule_type & TRIGGER_UPDATE) ? action : -1));
                              set_nullfield_int2(&row->tuple[10], (Int2) ((rule_type & TRIGGER_DELETE) ? action : -1));

                              set_tuplefield_null(&row->tuple[11]);
                              set_tuplefield_null(&row->tuple[12]);

                              set_tuplefield_string(&row->tuple[13], tgname);

                              QR_add_tuple(stmt->result, row);

                              /*//  next primary key */
                              pkptr += strlen(pkptr) + 1;

                        }

                  }

                  result = PG__SQLFetch(htbl_stmt);
            }
    }
      else {
            stmt->errormsg = "No tables specified to SQLForeignKeys.";
            stmt->errornumber = STMT_INTERNAL_ERROR;
            SC_log_error(func, "", stmt);
            PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
            return SQL_ERROR;
      }

      PG__SQLFreeStmt(htbl_stmt, SQL_DROP);
      PG__SQLFreeStmt(hpkey_stmt, SQL_DROP);

      mylog("SQLForeignKeys(): EXIT, stmt=%u\n", stmt);
    return SQL_SUCCESS;
}



RETCODE SQL_API SQLProcedureColumns(
                                    HSTMT         hstmt,
                                    UCHAR FAR *   szProcQualifier,
                                    SWORD         cbProcQualifier,
                                    UCHAR FAR *   szProcOwner,
                                    SWORD         cbProcOwner,
                                    UCHAR FAR *   szProcName,
                                    SWORD         cbProcName,
                                    UCHAR FAR *   szColumnName,
                                    SWORD         cbColumnName)
{
static char *func="SQLProcedureColumns";

      mylog("%s: entering...\n", func);

      SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}

RETCODE SQL_API SQLProcedures(
                              HSTMT          hstmt,
                              UCHAR FAR *    szProcQualifier,
                              SWORD          cbProcQualifier,
                              UCHAR FAR *    szProcOwner,
                              SWORD          cbProcOwner,
                              UCHAR FAR *    szProcName,
                              SWORD          cbProcName)
{
static char *func="SQLProcedures";

      mylog("%s: entering...\n", func);

      SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}

RETCODE SQL_API SQLTablePrivileges(
                                   HSTMT           hstmt,
                                   UCHAR FAR *     szTableQualifier,
                                   SWORD           cbTableQualifier,
                                   UCHAR FAR *     szTableOwner,
                                   SWORD           cbTableOwner,
                                   UCHAR FAR *     szTableName,
                                   SWORD           cbTableName)
{
static char *func="SQLTablePrivileges";

      mylog("%s: entering...\n", func);

      SC_log_error(func, "Function not implemented", (StatementClass *) hstmt);
    return SQL_ERROR;
}

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