摘要:
use Mengyou88_Wuliu--创建公司表create table dbo.Company2(CompanyID int identity(1,1) not null,CompanyName varchar(50) null,AddDate datetime null,constraint PK_Company2_CompanyID primary key clustered (CompanyID))--创建会员表create table dbo.Member(MemberID int identity(1,1) not null,CompanyID int not null,Mem 阅读全文
摘要:
【ROW_NUMBER 函数(Transact-SQL)】返回结果集分区内行的序列号,每个分区的第一行从 1 开始。注释: ROW_NUMBER() OVER (PARTITION BY COL1 ORDER BY COL2) --(其中,COL1,COL2可以为多列)select xt.id, xt.item, xt.attribute1, xt.attribute2, ROW_NUMBER() OVER(PARTITION BY xt.id,xt.item order by xt.id,xt.item) test from xxuts_te... 阅读全文