Question

当我尝试运行以下查询时，我收到以下错误。有人帮忙！

 IF EXISTS (SELECT * 
               FROM sch_scores s2 
               WHERE s2.ResultID = "24614" 
                 AND s2.FormatID = "9" 
                 )
    BEGIN
       UPDATE sch_scores 
       SET Score = '4' 
       WHERE ResultID = "24614" 
         AND FormatID = "9" 
        )
    END 
    ELSE BEGIN
       INSERT INTO dbo.sch_scores (school_id, ScoreID, ResultID, FormatID, Score, Status)
       VALUES (1, 30836, 24614, 9, 4, 'Active') 
    END

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IF EXISTS (SELECT * FROM sch_scores s2 WHERE s2.Result' at line 1

Answer 1

控制流结构（如IF或WHILE等）只能用于存储过程或函数。您可以将代码放在存储过程中，或者您真正需要的内容可能是INSERT ... ON DUPLICATE KEY UPDATE。阅读更多相关信息here。

虽然看起来你需要一个insert...on duplicate key语句，但是manual可以找到许多存储过程的例子。

Answer 2

您需要像使用WHERE子句一样用引号括起ResultID，FormatID和Score：

VALUES（1,30836，＆＃39; 24614＆＃39;，＆＃39; 9＆＃39;，＆＃39; 4＆＃39;，＆＃39;有效＆＃39;）

mysql错误，如果查询

2 个答案: