是否从两个表中的查询匹配条件中删除SQL？

此查询将删除所有行，而我只想删除两个表中

measureid

匹配的行，如下所示：

delete from temp1 
where exists (select t1.* 
              from temp1 t1, temp2 t2 
              where t2.measureid = t1.measureid)

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我必须更改什么？

我认为你不想使用

存在的
我认为你想在
中使用

delete from temp1 where measureid in 
    (select t1.measureid from temp1 t1, temp2 t2 where t2.measureid = t1.measureid);

或者更好

delete from temp1 where measureid in 
    (select measureid from temp2);

我认为您不想在
中使用
存在
我认为您想在

delete from temp1 where measureid in 
    (select t1.measureid from temp1 t1, temp2 t2 where t2.measureid = t1.measureid);

或者更好

delete from temp1 where measureid in 
    (select measureid from temp2);

那是因为

select t1.* from temp1 t1, temp2 t2 where t2.measureid = t1.measureid

始终返回行。你可能想要的是

delete from temp1 t1 where exists (select t2.* from temp2 t2 where t2.measureid = t1.measureid)

那是因为

select t1.* from temp1 t1, temp2 t2 where t2.measureid = t1.measureid

始终返回行。你可能想要的是

delete from temp1 t1 where exists (select t2.* from temp2 t2 where t2.measureid = t1.measureid)