MSSQL sql server order by 1,2 的具體含義

轉自:http://www.maomao365.com/?p=5416

 

摘要:
order by 1,2 的含義是對錶的第一列  按照從小到大的順序進行排列

 然後再對第二列按照從小到大的順序進行排列

  order by 1,2 等同於 order by [第一列],[第二列] 

 詳見以下舉例說明
 

 

 

create table A (keyId varchar(20),name varchar(120))
go
insert into A (name,keyId)values(10,`we`)
insert into A (name,keyId)values(2,`b`)
insert into A (name,keyId)values(3,`C`)
insert into A (name,keyId)values(4,`a`)
insert into A (name,keyId)values(5,`E`)
insert into A (name,keyId)values(7,`F`)
go
select * from A 
go
select * from A order by  1,2 
go
truncate table A
drop table A 
go