SELECT CustomerID,TotalMoney,CreateTime,ROW_NUMBER() OVER (PARTITION BY customerID ORDER BY createTime) AS num FROM OrderInfo) t WHERE t.num=1 3.2、找出每个顾客金额最大的订单金额 SELECT t.CustomerID,t.TotalMoney FROM ( SEL
select row_number() over(partition by A order by B ) as rowIndex from table A :为分组字段 B:为分组后的排序字段。 table 表的结构 多为: 多人 多条的相关数据。(比如:订单信息) 此条sql语句,多用于对数据进行分组排序,并对每个组中的数据分别进行编号,编号从1开始递增,每个组内的编号不会重复;...
AVG(amount) OVER w AS avg_amount FROM Orders WINDOW w AS ( PARTITION BY product ORDER BY order_time RANGE BETWEEN INTERVAL '1' HOUR PRECEDING AND CURRENT ROW); Flink SQL> SELECT id, proctime, price, > SUM(price) OVER w AS sum_amount, > AVG(price) OVER w AS avg_amount > FROM or...
selectcity,price,round(avg(price)over(partitionbycity)asavg_price,avg(price)over(partitionbycityorderbypricedescrows2preceding)asrunning_avgfromdatatable
select *, COUNT(*) OVER(ORDER BYc1, c2) from MyTestTable1 ; 按照c1,c2排序,然后从排序的第一行数据数起,到包含当前行相同数值(c1,c2)的行的数量。 比如c1=a, c2=c,对应数量为4. 结果: select *, COUNT(*) OVER(PARTITION BYc1, c2) ...
问SQL Server -在复杂查询中使用Over/Partition ByENROW_NUMBER()函数将针对SELECT语句返回的每一行，从...
ORDER BY 子句中指定的 OVER 子句會依資料行 SalesYTD 排列每個分割區的資料列。 ORDER BY語句中的 SELECT 子句會決定傳回整個查詢結果集的順序。 SQL 複製 USE AdventureWorks2022; GO SELECT ROW_NUMBER() OVER (PARTITION BY PostalCode ORDER BY SalesYTD DESC) AS "Row Number", p.LastName, s.Sales...
问SQL where函数与Over Partition一起使用ENlag() over() 与 lead() over() 函数是跟偏移量相关的...
SELECT [column_list], ROW_NUMBER() OVER ([PARTITION BY col1[, col2...]] ORDER BY col1 [asc|desc][, col2 [asc|desc]...]) AS rownum FROM table_name) WHERE rownum <= N [AND conditions] 1. 2. 3. 4. 5. 6. 7. 参数说明: ...
sum(sal) over () 不按部门,求所有员工总和,效果等同于sum(sal)。 SQL> select deptno,ename,sal, 2 sum(sal) over (partition by deptno order by ename) 部门连续求和,--各部门的薪水"连续"求和 3 sum(sal) over (partition by deptno) 部门总和, -- 部门统计的总和,同一部门总和不变 ...