odbc_primarykeys

    (PHP 4, PHP 5, PHP 7, PHP 8)

    odbc_primarykeys — Gets the primary keys for a table

    说明

    odbc_primarykeys(
        resource$odbc,
        ?string$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.

    参数

    odbc

    ODBC 连接标识符，详见 odbc_connect()。

    catalog

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

    schema

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

    table

    返回值

    Returns an ODBC result identifier 或者在失败时返回 false.

    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.

    示例

    示例 #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
    }
    ?>

    以上示例的输出类似于：

    Array ( [TABLE_CAT] => TutorialDB [TABLE_SCHEM] => dbo [TABLE_NAME] => TEST [COLUMN_NAME] => id [KEY_SEQ] => 1 [PK_NAME] => PK__TEST__3213E83FE141F843 )

    参见

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