发布网友 发布时间:2022-04-20 15:48
共1个回答
热心网友 时间:2023-06-26 17:34
用法就不对。
select tubecode from etchingaoi a where exists (select 1 from (select tubecode from etchingaoi where tubecode='1098I003') t where a.tubecode=t.tubecode)exist里要关联的,不过单纯你这个来说,用不着使用exists。