我有一个问题。
我有这两个表需要计算每个表的某一列的总和。 表与零件号有关系。
问题是每个表返回的值不止一个。
Material list AS bom
id finishgood partnumber qty
1 F1920-10 3122E 3
2 F1920-10 AE3030 4
3 F1920-10 3122E 2
4 F1920-10 5538WM 1
5 F1920-10 9803K 2
6 F1920-10 9722F 1
7 F1920-10 9722F 2
8 F1920-10 1001A 1
9 E2020-10 AB123 2
库存项目作为项目
id partnumber LOT onHand
1 3122E M01 105
2 3122E M10 23
3 AE3030 M02 30
4 5538WM M02 15
5 9803K M10 133
6 9722F M15 45
7 9722F M30 55
8 9722F M01 150
9 1001A M10 NULL
这是我的查询
SELECT bom.finishgood, bom.partnumber, SUM(bom.qty), SUM(item.onHand)
FROM bom
left outer join item ON item.partnumber = bom.partnumber
WHERE bom.partnubmer = 'F1920-10'
GROUP BY bom.partnumber
这是我的结果
partnumber sum(qty) ERROR sum(onHand)
3122E 10 5*2 128
AE3030 3 ok 30
5538WM 1 ok 15
9803K 2 ok 133
9722F 9 3*3 250
在添加更多值时会添加到其他表中的行。
这是理想的结果
partnumber sum(bom.qty) sum(items.onHand)
3122E 5 128
AE3030 3 30
5538WM 1 15
9803K 2 133
9722F 3 250
他们有什么想法吗? 我很沮丧 感谢您的回答。
最佳答案
SELECT
DerivedTotalByPart.PartNumber AS [partnumber],
[BOM Total] AS [sum(bom.qty)],
DerivedTotalOnHand.TotalOnHand AS [sum(items.onHand)]
FROM
(
SELECT
bom.partNumber AS [PartNumber],
SUM(bom.qty) AS [BOM Total]
FROM
bom
WHERE
bom.finishgood = 'F1920-10'
GROUP BY
bom.partNumber
) DerivedTotalByPart
LEFT OUTER JOIN
(
SELECT
partnumber,
ISNULL(SUM(onhand), 0) AS [TotalOnHand]
FROM
item
GROUP BY
partnumber
) DerivedTotalOnHand ON DerivedTotalByPart.PartNumber = DerivedTotalOnHand.PartNumber
关于php - MySQL:如何对返回多个值的两列的总和进行分组?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30921584/