odbc_specialcolumns

Manual de PHP

odbc_specialcolumns

(PHP 4 )

odbc_specialcolumns __ Returns 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

Description

resource odbc_specialcolumns ( resource connection_id, int type, string qualifier, string owner, string table, int scope, int nullable)

When the type argument is 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 optimal column or set of columns that, by retrieving values from the column or columns, allows any row in the specified table to be uniquely identified_

Returns an ODBC result identifier or FALSE on failure_

The result set has the following columns:

SCOPE
COLUMN_NAME
DATA_TYPE
TYPE_NAME
PRECISION
LENGTH
SCALE
PSEUDO_COLUMN

The result set is ordered by SCOPE_