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odbc_primarykeys

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

odbc_primarykeys — Gets the primary keys for a table

说明

odbc_primarykeys(
    Odbc\Connection $odbc,
    ?string $catalog,
    string $schema,
    string $table
): Odbc\Result|false

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

参数

odbc

ODBC 连接对象，详见 odbc_connect()。

catalog

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

schema

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

table

返回值

返回 ODBC 结果对象 或者在失败时返回 false。

The result set has the following columns:

Drivers can report additional columns.

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

更新日志

版本 说明
8.4.0 odbc 现在需要 Odbc\Connection 实例；之前需要 resource。
8.4.0 此函数现在返回 Odbc\Result 实例；之前返回 resource。

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