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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.

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