select CASE WHEN 类别 IN ( 'aa', 'bb' ) then 'ab' WHEN 类别 IN ( 'AA', 'BB' ) then 'AB' END AS 列 , a.列1 , count(*) from a, b where a.姓名=b.姓名 ${if(len(控件)=0,""," and 列 = '"+控件+"'")} group by 列,列1 如果不选就会显示表内容,但是如果控件选择列里面的ab或AB就报错,那里有错了呢 |
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