MySQL的刪除與嵌套select查詢

我有以下MySQL查詢：MySQL的刪除與嵌套select查詢

DELETE FROM catalogue 
WHERE catalogue_id IN (
    SELECT catalogue_id 
    FROM catalogue 
    WHERE (
    product_id = (SELECT product_id FROM catalogue WHERE catalogue_id = '2290') 
    AND length_id = (SELECT length_id FROM catalogue WHERE catalogue_id = '2290') 
    AND gauge_id = (SELECT gauge_id FROM catalogue WHERE catalogue_id = '2290') 
) 
)

但是，當我嘗試執行我收到以下錯誤信息：

您不能指定目標表'目錄'在FROM子句中更新

有人能告訴我哪裏出錯了嗎？

來源

2011-09-04 bland_dan

執行雙重嵌套

DELETE FROM catalogue 
WHERE catalogue_id IN (SELECT catalogue_id FROM (
    SELECT catalogue_id 
    FROM catalogue 
    WHERE (
    product_id = (SELECT product_id FROM catalogue WHERE catalogue_id = '2290') 
    AND length_id = (SELECT length_id FROM catalogue WHERE catalogue_id = '2290') 
    AND gauge_id = (SELECT gauge_id FROM catalogue WHERE catalogue_id = '2290') 
)) x 
)

它可以愚弄的MySQL

來源

2011-09-04 10:15:41 zerkms

完美工作zerkms，但是'愚弄'MySQL的原因是什麼？ –

如果你有多個「WHERE」列，那麼怎麼辦？即'DELETE FROM catalog WHERE catalogue_id AND catalogue_name IN ...' – ThreaT

@ThreaT：我不確定你在問什麼。多個謂詞可以用ADD來添加，是的。 – zerkms

或者您可以使用臨時表：

CREATE TEMPORARY TABLE t AS 
    SELECT catalogue_id 
    FROM catalogue 
    WHERE (
    product_id = (SELECT product_id FROM catalogue WHERE catalogue_id = '2290') 
    AND length_id = (SELECT length_id FROM catalogue WHERE catalogue_id = '2290') 
    AND gauge_id = (SELECT gauge_id FROM catalogue WHERE catalogue_id = '2290') 
); 

    DELETE FROM catalogue WHERE catalogue_id IN (SELECT catalogue_id FROM t);

與您的查詢你有You can't specify target table 'catalogue' for update in FROM clause，因爲你不能使選擇和更新在一個查詢中的同一張桌子上。

來源

2011-09-04 10:26:16

感謝卡米爾的解釋。 –

MySQL的刪除與嵌套select查詢

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