查询存在表1 但不存在表2 的所有数据 比如 table 1 T1 T12 T131 a A2 b B3 C ctable 2 T21 T22 T23 1 a A 5 e E 6 f F 具体查询语句如下:select A.* from table1 A,table2 Bwhere A.t11<>B.t21 或者select * form table1 where T11 not in (select t21 from table2) 相关文章: 2021-06-04 2021-08-11 2021-09-17 2022-01-09 2022-12-23 2022-01-15 2022-12-23