sql综合查询with row_number() over 递归和开窗查询 with area as( select Orderid,FatherOrderid,rtrim(PartName) as NodeText,left('00',2-len(row_number() over (order by partindex)))+ CONVERT(varchar,row_number() over (order by partindex)) as d,0 as liu,op as 这列不用 from #Temp_...
with area as( select Orderid,FatherOrderid,rtrim(PartName) as NodeText,left('00',2-len(row_number() over (order by partindex)))+ CONVERT(varchar,row_number() over (order by partindex)) as d,0 as liu,op as 这列不用 from #Temp_Tree where FatherOrderid = 419197 union all select...
--最后对TempCourse筛选出 姓名+课程 重复的数据保留ID最小的(num>1)存入临时表 #TmpDeletedTb ;WITH TmpCourse (ID,Student,Sub,Num) as ( select ID,Student,Sub,ROW_NUMBER() OVER(PARTITION BY Student,Sub ORDER BY ID ) as num from Course ) SELECT * into #TmpDeletedTb FROM TmpCourse where ...
在SQL 中,ROW_NUMBER() 函数用于为查询结果集中的每一行分配一个唯一的数字。当您需要嵌套使用 ROW_NUMBER() 函数时,通常是在同一个查询中为不同条件或分组分配行号。以下是一个嵌套 ROW_NUMBER() 函数的示例: WITH RankedData AS ( SELECT *, ROW_NUMBER() OVER (PARTITION BY group_column ORDER BY sor...
select ROW_NUMBER() over(partition by customerID order by totalPrice) as rows,customerID,totalPrice, DID from OP_Order 1. 4.统计每一个客户最近下的订单是第几次下的订单。 代码如下: with tabsas(selectROW_NUMBER()over(partition by customerID order by totalPrice)asrows,customerID,totalPrice,...
with tabs as(select ROW_NUMBER() over(partition by customerID order by insDT) as rows,* from OP_Order)select * from tabs whererows=1select * from OP_Order 1. 2. 3. 4. 5. 6. 7.rows_number()可用于分页 思路:先把所有的产品筛选出来,然后对这些产品进行编号。然后在where子句中进行过滤...
selectROW_NUMBER()OVER(orderby[SubTime]desc)asrow_num,*from[Order]orderby[TotalPrice]desc 查询结果如下图所示: 利用row_number可以实现web程序的分页,我们来查询指定范围的表数据。例:根据订单提交时间倒序排列获取第三至第五条数据。 withorderSectionas(selectROW_NUMBER()OVER(orderby[SubTime]desc) rownum...
1.ROW_NUMBER()基本用法: SELECT SalesOrderID, CustomerID, ROW_NUMBER() OVER (ORDER BY SalesOrderID) AS RowNumber FROM Sales.SalesOrderHeader 结果集: SalesOrderID CustomerID RowNumber --- --- --- 43659 676 1 43660 117 2 43661 442 3 43662 227 ...
不允许将非 INDEX 和 FORCESEEK 的表提示用作查询提示,除非该查询已经具有一个指定该表提示的 WITH 子句。有关详细信息,请参阅“备注”。 注释 只有在 INSERT 语句中使用了 SELECT 子句时,才能在该语句中指定查询提示。 只能在顶级查询中指定查询提示,不能在子查询指定。将表提示指定为查询提示时,可以在顶级查询...
row_number() 按照值排序时产生一个自增编号,不会重复。 rank() 按照值排序时产生一个自增编号,值相等时会重复,会产生空位 。 dense_rank() 按照值排序时产生一个自增编号,值相等时会重复,不会产生空位。 select *, rank() over( order by score desc) ranking , ...