北纬28.33

摘要： if object_Id('testTb')is not null drop table testTbgocreate table testTb (A int , B int ,C int)insert into testTbselect 1,2,3 union allselect 1,3,2 union allselect 2,1,3 union allselect 3,1,4select (... 阅读全文