ODBC Functions
PHP Manual

odbc_primarykeys

Gets the primary keys for a table

Description

Odbc\Resultfalse odbc_primarykeys(
    Odbc\Connection $odbc,
    stringnull $catalog,
    string $schema,
    string $table
)

Returns a result object that can be used to fetch the column names that comprise the primary key for a table.

Parameters

odbc

The ODBC connection object, see odbc_connect for details.

catalog

The catalog ('qualifier' in ODBC 2 parlance).

schema

The schema ('owner' in ODBC 2 parlance).

table

Return Values

Returns an ODBC result object or false on failure.

The result set has the following columns:

  • TABLE_CAT
  • TABLE_SCHEM
  • TABLE_NAME
  • COLUMN_NAME
  • KEY_SEQ
  • PK_NAME
Drivers can report additional columns.

The result set is ordered by TABLE_CAT, TABLE_SCHEM, TABLE_NAME and KEY_SEQ.

Changelog

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.

Examples

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
)

See Also

  • odbc_tables
  • odbc_foreignkeys