LuChaoShuai

摘要： if object_id('[tb]') is not null drop table [tb]gocreate table [tb]([col] varchar(3))insert [tb]select '2' union select 'b2' union select 'a3' union select 'b1' union select '5b' union select '5a' union select '3' union select 'a2&# 阅读全文