odbc_statistics

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

    odbc_statistics — Retrieve statistics about a table

    Опис

    odbc_statistics(
        resource $odbc,
        ?string $catalog,
        string $schema,
        string $table,
        int $unique,
        int $accuracy
    ): resource|false

    Get statistics about a table and its indexes.

    Параметри

    odbc

    Ідентифікатор з'єднання ODBC. Докладніше: odbc_connect().

    catalog

    Каталог ('qualifier' мовою ODBC 2).

    schema

    Схема ('owner' мовою ODBC 2).

    table

    The table name.

    unique

    The type of the index. One of SQL_INDEX_UNIQUE or SQL_INDEX_ALL.

    accuracy

    One of SQL_ENSURE or SQL_QUICK. The latter requests that the driver retrieve the CARDINALITY and PAGES only if they are readily available from the server.

    Значення, що повертаються

    Returns an ODBC result identifier або false в разі помилки.

    The result set has the following columns:

    • TABLE_CAT
    • TABLE_SCHEM
    • TABLE_NAME
    • NON_UNIQUE
    • INDEX_QUALIFIER
    • INDEX_NAME
    • TYPE
    • ORDINAL_POSITION
    • COLUMN_NAME
    • ASC_OR_DESC
    • CARDINALITY
    • PAGES
    • FILTER_CONDITION
    Драйвер може оголошувати додаткові стовпці.

    The result set is ordered by NON_UNIQUE, TYPE, INDEX_QUALIFIER, INDEX_NAME and ORDINAL_POSITION.

    Приклади

    Приклад #1 List Statistics of a Table

    <?php
    $conn     = odbc_connect($dsn, $user, $pass);
    $statistics = odbc_statistics($conn, 'TutorialDB', 'dbo', 'TEST', SQL_INDEX_UNIQUE, SQL_QUICK);
    while ((    $row = odbc_fetch_array($statistics))) {
    print_r($row);
    break;     // further rows omitted for brevity
    }
    ?>

    Поданий вище приклад виведе щось схоже на:

    Array
(
    [TABLE_CAT] => TutorialDB
    [TABLE_SCHEM] => dbo
    [TABLE_NAME] => TEST
    [NON_UNIQUE] =>
    [INDEX_QUALIFIER] =>
    [INDEX_NAME] =>
    [TYPE] => 0
    [ORDINAL_POSITION] =>
    [COLUMN_NAME] =>
    [ASC_OR_DESC] =>
    [CARDINALITY] => 15
    [PAGES] => 3
    [FILTER_CONDITION] =>
)

    Прогляньте також

    • odbc_tables() - Get the list of table names stored in a specific data source

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    User Contributed Notes 1 note

    up
    2
    eion at bigfoot dot com
    13 years ago
    A couple of the function parameters are undefined:

    unique - determines whether you want to return just unique indexes or all indexes. Use SQL_INDEX_UNIQUE or SQL_INDEX_ALL for this parameter

    accuracy - whether you wan to return everything there is to know about the table or just what information is readily available. Use SQL_ENSURE or SQL_QUICK for this parameter

    For a bit more info about this function see the ODBC function SQLStatistics() at http://msdn.microsoft.com/en-us/library/ms711022(v=vs.85).aspx
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