SQLRETURN CLDescribeCol( SQLHSTMT statement_handle,
SQLUSMALLINT column_number,
SQLCHAR *column_name,
SQLSMALLINT buffer_length,
SQLSMALLINT *name_length,
SQLSMALLINT *data_type,
SQLULEN *column_size,
SQLSMALLINT *decimal_digits,
SQLSMALLINT *nullable )
{
CLHSTMT cl_statement = (CLHSTMT) statement_handle;
return SQLDESCRIBECOL( cl_statement -> cl_connection,
cl_statement -> driver_stmt,
column_number,
column_name,
buffer_length,
name_length,
data_type,
column_size,
decimal_digits,
nullable );
}
SQLRETURN get_column_names( CLHSTMT cl_statement )
{
int i;
char cname[ 256 ];
/*
* already done ?
*/
if ( cl_statement -> column_names )
{
return SQL_SUCCESS;
}
/*
* get the names of all the columns
*/
cl_statement -> column_names = malloc( sizeof(char *)
* cl_statement -> column_count );
cl_statement -> data_type = malloc( sizeof( SQLSMALLINT )
* cl_statement -> column_count );
cl_statement -> column_size = malloc( sizeof( SQLULEN )
* cl_statement -> column_count );
cl_statement -> decimal_digits = malloc( sizeof( SQLSMALLINT )
* cl_statement -> column_count );
for ( i = 1; i <= cl_statement -> column_count; i ++ )
{
SQLRETURN ret;
if ( !CHECK_SQLDESCRIBECOL( cl_statement -> cl_connection ))
{
cl_statement -> cl_connection -> dh.__post_internal_error( &cl_statement ->
dm_statement -> error,
ERROR_01000, "Driver does not support SQLDescribeCol",
cl_statement -> dm_statement -> connection ->
environment -> requested_version );
return SQL_ERROR;
}
ret = SQLDESCRIBECOL( cl_statement -> cl_connection,
cl_statement -> driver_stmt,
i,
cname,
sizeof( cname ),
NULL,
&cl_statement -> data_type[ i - 1 ],
&cl_statement -> column_size[ i - 1 ],
&cl_statement -> decimal_digits[ i - 1 ],
NULL );
if ( !SQL_SUCCEEDED( ret ))
{
cl_statement -> cl_connection -> dh.__post_internal_error( &cl_statement ->
dm_statement -> error,
ERROR_01000, "SQLDescribeCol failed in driver",
cl_statement -> dm_statement -> connection ->
environment -> requested_version );
return SQL_ERROR;
}
cl_statement -> column_names[ i - 1 ] = strdup( cname );
}
return SQL_SUCCESS;
}
