(PHP 4, PHP 5, PHP 7, PHP 8)
odbc_specialcolumns — Retrieves special columns
$odbc
,$type
,$catalog
,$schema
,$table
,$scope
,$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.
odbc
O identificador da conexão ODBC. Consulte odbc_connect() para obter detalhes.
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.
catalog
O catálogo ('qualifier' na linguagem ODBC 2).
schema
O esquema ('owner' na linguagem ODBC 2).
table
The table.
scope
The scope, which orders the result set.
One of SQL_SCOPE_CURROW
, SQL_SCOPE_TRANSACTION
or SQL_SCOPE_SESSION
.
nullable
Determines whether to return special columns that can have a NULL value.
One of SQL_NO_NULLS
or SQL_NULLABLE
.
Returns an ODBC result identifier or false
on
failure.
The result set has the following columns:
SCOPE
COLUMN_NAME
DATA_TYPE
TYPE_NAME
COLUMN_SIZE
BUFFER_LENGTH
DECIMAL_DIGITS
PSEUDO_COLUMN
The result set is ordered by SCOPE
.