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    odbc_primarykeys

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

    odbc_primarykeys — テーブルの主キーを取得する

    説明

    odbc_primarykeys(
        resource $odbc,
        ?string $catalog,
        string $schema,
        string $table
    ): resource|false

    テーブルの主キーを有するカラムの名前を取得する際に使用可能な結果 ID を返します。

    パラメータ

    odbc

    ODBC 接続 ID。詳細は odbc_connect() を参照ください。

    catalog

    カタログ(ODBC 2 の用語では '修飾子')。

    schema

    スキーマ (ODBC 2 の用語では '所有者')。

    table

    戻り値

    ODBC 結果 ID を返します。失敗した場合に false を返します。

    結果は以下のカラムを有します。

    • TABLE_CAT
    • TABLE_SCHEM
    • TABLE_NAME
    • COLUMN_NAME
    • KEY_SEQ
    • PK_NAME
    ドライバは追加のカラムを返すことが出来ます。

    結果セットは TABLE_CAT, TABLE_SCHEM, TABLE_NAME, KEY_SEQ でソートされます。

    例

    例1 プライマリーキーの一覧を表示する

    <?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
    }
    ?>

    上の例の出力は、 たとえば以下のようになります。

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

    参考

    • odbc_tables() - 指定したデータソースに保存されたテーブルの名前のリストを取得する
    • odbc_foreignkeys() - 外部キーのリストを取得する

    Found A Problem?

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    User Contributed Notes 4 notes

    up
    2
    Rio Bautista (RRIT)
    20 years ago
    Sample to get the primary keys of an MSSQL table:

    $cn = odbc_connect( "DSN", "sa", "pwd");

    $rs = odbc_primarykeys( $cn, "database", "dbo", "table_name");

    odbc_result_all($rs);
    up
    0
    dan dot scott at ca dot ibm dot com
    20 years ago
    Responding to devendra_joshi:

    In DB2 Universal Database for Linux, UNIX, and Windows the catalog views are accessed through the SYSCAT schema, not the SYSIBM schema -- so you should be issuing "SELECT * FROM SYSCAT.KEYCOLUSE" to list all of the columns that participate in a given key constraint.

    A complete list of the catalog views for DB2 can be referenced at http://publib.boulder.ibm.com/infocenter/db2help/ by searching for 'catalog views' and selecting the top hit.
    up
    0
    devendra_joshi at hotmail dot com
    21 years ago
    I want a list of primary keys of a table in db2

    by using
    'select * from SYSIBM.SYSKEYCOLUSE ' query i am getting the result on CLP
    but when i am writing it in PHP as follows it returns 0 ROWS.

    $mstmt="select * from SYSIBM.SYSKEYCOLUSE";
    $b=odbc_exec($conn,$mstmt);
    echo odbc_result_all($b);

    where as if we write this code

    $mstmt="select * from SYSIBM.SYSFUNCTIONS";
    $b=odbc_exec($conn,$mstmt);
    echo odbc_result_all($b);

    it returns the correct data.
    up
    -3
    ewilde aht bsmdevelopment dawt com
    18 years ago
    I was trying to find the primary keys from an SQLServer database through the ODBC interface. Funnily enough, the odbc_primarykeys function doesn't work with SQLServer (at least not my implementation of it). Fortunately, the sp_keys query is passed through and the answer returned. This code works (providing you know which database you're dealing with, which is a whole 'nother story).

    // If this is SQLServer, we need to do a special operation to get the
    // primary keys.
    //
    // Looks like the implementers of the ODBC interface just blew this
    // one off, since the database has a query to return the info and the
    // info even comes back with the same column names.
    if ($DBType == "SQLServer")
    $KeySel = odbc_exec($DBConn, "sp_pkeys ".$TableName);

    // Otherwise, ask the database through ODBC for the primary key
    // names.
    else $KeySel = odbc_primarykeys($DBConn, $DatabaseName,
    $DatabaseUser, $TableName);

    while ($KeySel && ($KeyRec = odbc_fetch_array($KeySel)))
    $KeyCol[$KeyRec["KEY_SEQ"]] = $KeyRec["COLUMN_NAME"];
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