... PHP 4 >= 4.0.0) odbc_primarykeys -- Returns a result identifier that can be used to fetch the column names that comprise the primary key for a table . int odbc_primarykeys ( int connection_id, string qualifier, string owner, string table) . Returns the column names that comprise the primary key for a table. Returns an ODBC result identifier or FALSE on failure. The result set has the following columns: . TABLE_QUALIFIER . TABLE_OWNER . TABLE_NAME . COLUMN_NAME . ...