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/**********************************************************************
* SQLDescribeCol
*
**********************************************************************
*
* This code was created by Peter Harvey (mostly during Christmas 98/99).
* This code is LGPL. Please ensure that this message remains in future
* distributions and uses of this code (thats about all I get out of it).
* - Peter Harvey pharvey@codebydesign.com
*
**********************************************************************/
#include <config.h>
#include "driver.h"
SQLRETURN SQLDescribeCol( SQLHSTMT hDrvStmt,
SQLUSMALLINT nCol,
SQLCHAR *szColName,
SQLSMALLINT nColNameMax,
SQLSMALLINT *pnColNameLength,
SQLSMALLINT *pnSQLDataType,
SQLULEN *pnColSize,
SQLSMALLINT *pnDecDigits,
SQLSMALLINT *pnNullable )
{
HDRVSTMT hStmt = (HDRVSTMT)hDrvStmt;
COLUMNHDR *pColumnHeader;
/* SANITY CHECKS */
if ( NULL == hStmt )
return SQL_INVALID_HANDLE;
if ( NULL == hStmt->hStmtExtras )
return SQL_INVALID_HANDLE;
if ( hStmt->hStmtExtras->nRows < 1 )
{
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, "SQL_ERROR No result set." );
return SQL_ERROR;
}
if ( nCol < 1 || nCol > hStmt->hStmtExtras->nCols )
{
sprintf((char*) hStmt->szSqlMsg, "SQL_ERROR Column %d is out of range. Range is 1 - %d", nCol, hStmt->hStmtExtras->nCols );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING,(char*) hStmt->szSqlMsg );
return SQL_ERROR;
}
/* OK */
pColumnHeader = (COLUMNHDR*)(hStmt->hStmtExtras->aResults)[nCol];
if ( szColName )
strncpy((char*) szColName, pColumnHeader->pszSQL_DESC_NAME, nColNameMax );
if ( pnColNameLength )
*pnColNameLength = strlen((char*) szColName );
if ( pnSQLDataType )
*pnSQLDataType = pColumnHeader->nSQL_DESC_TYPE;
if ( pnColSize )
*pnColSize = pColumnHeader->nSQL_DESC_LENGTH;
if ( pnDecDigits )
*pnDecDigits = pColumnHeader->nSQL_DESC_SCALE;
if ( pnNullable )
*pnNullable = pColumnHeader->nSQL_DESC_NULLABLE;
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_INFO, LOG_INFO, "SQL_SUCCESS" );
return SQL_SUCCESS;
}
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