將Oracle查詢更改爲MySQL - 語法錯誤

Question

我有一個適用於Oracle數據庫的Oracle查詢。但是當我試圖將它移動到MySQL時，我有語法錯誤，並且我無法理解錯誤的位置。

Oracle查詢：

DELETE FROM tec_valid_codes 
       WHERE code IN 
         (SELECT a.oldacctnbr 
          FROM tec_onoff_file a, 
           tec_onoff_file b, 
           tec_valid_codes c 
          WHERE  a.curracctnbr = b.curracctnbr 
           AND a.oldacctnbr <> b.oldacctnbr 
           AND a.transtype = 'COMB' 
           AND b.transtype = 'COMB' 
           AND a.oldacctnbr = c.code 
         MINUS 
          SELECT MAX (c.oldacctnbr) 
          FROM tec_valid_codes tvc, 
            (SELECT a.oldacctnbr, a.curracctnbr 
            FROM tec_onoff_file a, tec_onoff_file b 
            WHERE  a.curracctnbr = b.curracctnbr 
              AND a.oldacctnbr <> b.oldacctnbr 
              AND a.transtype = 'COMB' 
              AND b.transtype = 'COMB') c 
          WHERE tvc.code = c.oldacctnbr 
         GROUP BY curracctnbr); 

我的MySQL查詢，不工作：

'vc 
    WHERE vc.code IN 
    (SELECT t1.oldacctnbr FROM 
     (SELECT a.oldacctn' 

我不明白：

DELETE FROM tec_valid_codes vc 
       WHERE vc.code IN 
        (SELECT t1.oldacctnbr FROM 
         (SELECT a.oldacctnbr 
         FROM tec_onoff_file a, 
          tec_onoff_file b, 
          tec_valid_codes c 
         WHERE a.curracctnbr = b.curracctnbr 
         AND a.oldacctnbr <> b.oldacctnbr 
         AND a.transtype = 'COMB' 
         AND b.transtype = 'COMB' 
         AND a.oldacctnbr = c.code) as `t1` 
        WHERE t1.oldacctnbr NOT IN 
         (SELECT MAX(c.oldacctnbr) 
         FROM tec_valid_codes tvc, 
          (SELECT a.oldacctnbr, a.curracctnbr 
          FROM tec_onoff_file a, tec_onoff_file b 
          WHERE a.curracctnbr = b.curracctnbr 
          AND a.oldacctnbr <> b.oldacctnbr 
          AND a.transtype = 'COMB' 
          AND b.transtype = 'COMB') as `c` 
         WHERE tvc.code = c.oldacctnbr) 
        GROUP BY vc.curracctnbr); 

我在這行有錯誤語法錯誤在這裏。我錯在哪裏？我的MySQL查詢能正常工作嗎？

編輯：我的解決方案：

DELETE FROM tec_valid_codes 
      WHERE code IN 
       (SELECT t1.oldacctnbr FROM 
        (SELECT a.oldacctnbr 
        FROM tec_onoff_file a, 
         tec_onoff_file b, 
         tec_valid_codes c 
        WHERE a.curracctnbr = b.curracctnbr 
        AND a.oldacctnbr <> b.oldacctnbr 
        AND a.transtype = 'COMB' 
        AND b.transtype = 'COMB' 
        AND a.oldacctnbr = c.code) as `t1`) 
      AND code NOT IN 
       (SELECT t2.oldcode FROM 
        (SELECT MAX(c.oldacctnbr) as oldcode 
        FROM tec_valid_codes tvc, 
         (SELECT a.oldacctnbr, a.curracctnbr 
         FROM tec_onoff_file a, tec_onoff_file b 
         WHERE a.curracctnbr = b.curracctnbr 
         AND a.oldacctnbr <> b.oldacctnbr 
         AND a.transtype = 'COMB' 
         AND b.transtype = 'COMB') as `c` 
        WHERE tvc.code = c.oldacctnbr 
        GROUP BY curracctnbr) as `t2`); 

它是正確的查詢？

Answer 1

你有（至少）在最後一個小錯誤：

GROUP BY vc.curracctnbr 

應該從T1的東西：

GROUP BY t1.curracctnbr