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create table #table1 (name varchar(20),dis varchar(100)) create table #table2 (name varchar(20),dis varchar(100)) insert into #table1 select 'a','b' union select 'b','c' union select 'd','e' union select 'f','g' insert into #table2 select 'a1','b1' union select 'b1','c1' union select 'd1','e1' union select 'f1','g1' select * from #table2 where dis not in(select name from #table1) select * from #table2 as a left join #table1 as b on a.dis=b.name where b.name is null /* select * from 表A where 列 not in(select 列 from 表B) 替换方法 表A 与 表B 进行join关联 让B 列为null时 则表A有数据 表B没有。 之前做数据转储的时候想到的,数据量很大的时候可以这样 效率很高 select * from 表A as a left join 表B as b on a.列=b.列 where b.列 is null */