(PHP 4, PHP 5, PHP 7)
odbc_primarykeys — Gets the primary keys for a table
odbc_primarykeys ( resource $connection_id , string $catalog , string $schema , string $table ) : resource|false
Returns a result identifier that can be used to fetch the column names that comprise the primary key for a table.
connection_id
The ODBC connection identifier, see odbc_connect() for details.
catalog
The catalog ('qualifier' in ODBC 2 parlance).
schema
The schema ('owner' in ODBC 2 parlance).
table
Returns an ODBC result identifier or false
on failure.
The result set has the following columns:
TABLE_CAT
TABLE_SCHEM
TABLE_NAME
COLUMN_NAME
KEY_SEQ
PK_NAME
The result set is ordered by TABLE_CAT
, TABLE_SCHEM
, TABLE_NAME
and KEY_SEQ
.
Example #1 List primary Keys of a Column
<?php $conn = odbc_connect($dsn, $user, $pass); $primarykeys = odbc_primarykeys($conn, 'TutorialDB', 'dbo', 'TEST'); while (($row = odbc_fetch_array($primarykeys))) { print_r($row); break; // further rows omitted for brevity } ?>
The above example will output something similar to:
Array ( [TABLE_CAT] => TutorialDB [TABLE_SCHEM] => dbo [TABLE_NAME] => TEST [COLUMN_NAME] => id [KEY_SEQ] => 1 [PK_NAME] => PK__TEST__3213E83FE141F843 )
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https://www.php.net/manual/en/function.odbc-primarykeys.php