(PHP 4, PHP 5, PHP 7, PHP 8)
odbc_specialcolumns — Retrieves special columns
$odbc,$type,$catalog,$schema,$table,$scope,$nullableRetrieves 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.
odbcThe ODBC connection object, see odbc_connect() for details.
typeSQL_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.catalogThe catalog ('qualifier' in ODBC 2 parlance).
schemaThe schema ('owner' in ODBC 2 parlance).
tableThe table.
scopeThe scope, which orders the result set. One of SQL_SCOPE_CURROW, SQL_SCOPE_TRANSACTION or SQL_SCOPE_SESSION.
nullableDetermines whether to return special columns that can have a NULL value. One of SQL_NO_NULLS or SQL_NULLABLE.
Returns an ODBC result object or false on failure.
The result set has the following columns:
SCOPECOLUMN_NAMEDATA_TYPETYPE_NAMECOLUMN_SIZEBUFFER_LENGTHDECIMAL_DIGITSPSEUDO_COLUMNThe result set is ordered by SCOPE.
| Version | Description |
|---|---|
| 8.4.0 | odbc expects an Odbc\Connection instance now; previously, a resource was expected. |
| 8.4.0 | This function returns an Odbc\Result instance now; previously, a resource was returned. |