(PHP 4, PHP 5)
odbc_specialcolumns — Retrieves special columns
$connection_id
, int $type
, string $qualifier
, string $owner
, string $table
, int $scope
, int $nullable
)Retrieves either the optimal set of columns that uniquely identifies a row in the table, or columns that are automatically updated when any value in the row is updated by a transaction.
connection_id
ODBC 连接标识符，详见 odbc_connect()。
type
SQL_BEST_ROWID,
odbc_specialcolumns() returns the
column or columns that uniquely identify each row in the table.
When the type argument is SQL_ROWVER,
odbc_specialcolumns() returns the column or columns in the
specified table, if any, that are automatically updated by the data source
when any value in the row is updated by any transaction.
qualifier
The qualifier.
owner
The owner.
table
The table.
scope
The scope, which orders the result set.
nullable
The nullable option.
Returns an ODBC result identifier or FALSE on
failure.
The result set has the following columns: