WHERE子句中列的SQL SUM

Question

I got a large table like below :

--------------------------
OrderNo     OrderQuantity
--------------------------
100             250.00
101             455.10
102              89.55
103             112.15
104             330.12

I have to filter by SUM of OrderQuantity by less than or equal to 800.00. My SQL query is below which did not work as expected.

SELECT OrderNo, OrderQuantity
    FROM WorkOrder
        HAVING SUM(OrderQuantity) <= 800

I expect a result like below.

--------------------------
OrderNo     OrderQuantity
--------------------------
100             250.00
101             455.10
102              89.55

Can anybody help me please?

Answer 1

;With cte(OrderNo,OrderQuantity)
AS
(
SELECT 100,250.00 Union all
SELECT 101,455.10 Union all
SELECT 102, 89.55 Union all
SELECT 103,112.15 Union all
SELECT 104,330.12 
)
SELECT OrderNo,OrderQuantity From
(
SELECT *,SUM(OrderQuantity) Over( Order by OrderNo) AS SumOrderQuantity from cte
)Dt
Where Dt.SumOrderQuantity <=800

OutPut

--------------------------
OrderNo     OrderQuantity
--------------------------
100             250.00
101             455.10
102              89.55

Answer 2

Use this. Although your sample has only 1 orderno per orderquantity , if you have multiple orderno , and you want to get the sum , use the below query.

SELECT OrderNo, sum(OrderQuantity)
    FROM WorkOrder
GROUP BY OrderNo
HAVING SUM(OrderQuantity) <= 800

So if you want to perform any aggregated calculations on a set of rows, you need GROUP BY

Answer 3

One approach is to use a correlated subquery to find the cumulative sum of the order quantity, and then restrict to only records where that sum is less than or equal to 800.

SELECT
    t1.OrderNo,
    t1.OrderQuantity,
    (SELECT SUM(t2.OrderQuantity) FROM WorkOrder t2
     WHERE t2.OrderNo <= t1.OrderNo) AS CumOrderQuantity
FROM WorkOrder t1
WHERE t1.CumOrderQuantity <= 800

Answer 4

你以错误的方式，坏语法，这样当你使用HAVING子句， 你应该要在having子句，像这样使用列组 ： SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY column_name HAVING aggregate_function(column_name) operator value ，尝试这样，您可以解决此问题

Answer 5

if you are using sql sever 2012 or later you could do the following

SELECT OrderNo, OrderQuantity
FROM WorkOrder
Group By OrderNo, OrderQuantity
Having SUM(OrderQuantity) OVER (ORDER BY OrderNo) < 800