Question

我是SQL的初学者，如果我的术语/编码稍微偏离，或者可能有点偏离，请提前道歉。我有两个问题，我想加入一个。第一个创建包含两个特定进程的productid列表。然后我想在第二个查询中使用这些productids。

以下也是正确的？ group by products.productid having（sum（processid如'pick％'然后1 else 0 end）+ sum（caseid如'pack％'然后1 else 0 end）= 2）

任何帮助都会非常感激，希望这是有道理的。

SELECT
Products.ProductID
FROM Products
INNER JOIN Categories ON Products.Category = Categories.Category
INNER JOIN Boms ON Products.Product = Boms.Product AND Boms.BomVersion = Products.BomVersion
LEFT OUTER JOIN Products AS Comp ON Boms.Component = Comp.Product 
LEFT OUTER JOIN Processes  ON Boms.Process = Processes.Process
WHERE   
products.active = 1
and Categorys.Categoryid in ('5','20')
group by products.productid
having (sum(case when processid like 'pick%' then 1 else 0 end) + sum(case when processid like 'pack%' then 1 else 0 end) = 2)
order by products.productid


SELECT
Products.ProductID,
Products.productdescription,
Boms.Type As Type,
Comp.ProductId as Component,
Comp.productdescription,
Boms.Quantity,
BomVersions.BomVersionID,
Processes.processid,
Processes.ProcessDescription
FROM Products
INNER JOIN Categories ON Products.Category = Categories.Category
INNER JOIN Boms ON Products.Product = Boms.Product AND Boms.BomVersion = Products.BomVersion
LEFT OUTER JOIN Products AS Comp ON Boms.Component = Comp.Product 
LEFT OUTER JOIN Processes  ON Boms.Process = Processes.Process
INNER JOIN BomVersions ON Products.BomVersion = BomVersions.BomVersion
WHERE   
products.active = 1

order by products.productid, products.type,comp.productid

Answer 1

要合并它们，您可以执行以下操作。

SELECT b.*
FROM 
  (SELECT Products.ProductID FROM Products INNER JOIN ...) AS a
   INNER JOIN
  (SELECT Products.ProductID, Products.productdescription, Boms.Type As Type, ...) AS b
   ON a.ProductID = b.ProductID

SQL选择查询到另一个查询

1 个答案: