Question

我正在尝试创建一个更新查询，它将根据托盘编号匹配更新我的表值。

SELECT [pallet] [quantity] 
FROM dba.Inventory

这将返回2列，一列有托盘，另一列有计数。

我需要将它放在一个更新语句中，该语句将匹配此处和表TABLE1之间的每个托盘并更新TABLE1中的计数

Answer 1

使用公用表表达式。

语法就像

with CTE_Values()
AS
( --- Your Statement---)
Update T
Set Col = C.col
From Table T Join CTE_Values C
On .....

Answer 2

我认为一个简单的解决方案（不评估看起来很复杂的SELECT本身）就是将整个SELECT放入CTE并将其用作更新的来源。像这样：

;WITH SrcCte AS (
    SELECT pallet, SUM(total) as quantity
    FROM ( 

    SELECT r1.pallet, total 
    FROM
    (SELECT plet_nbr, COUNT(serl_nbr) as total FROM Inventory group by plet_nbr  )c1
    right join
    (select pallet from dbo.RFS where status NOT LIKE 'Not Available')r1
    on  r1.pallet = c1.plet_nbr 

    UNION all

    Select r2.pallet, sum(iloc_qty) as total
    FROM
    (SELECT plet_nbr, iloc_qty FROM Inventory WHERE([matl_nbr] Like '#%')) c2
    right join
    (select pallet from dbo.RFS where status NOT LIKE 'Not Available') r2
    on  r2.pallet = c2.plet_nbr 
    where iloc_qty is not null
    GROUP BY r2.pallet 
    )
    AS final

    GROUP BY pallet
)
UPDATE Dest
SET Dest.Cnt = Src.Quantity             
FROM Table1 AS Dest
    JOIN SrcCte AS Src ON Src.pallet = Dest.pallet

从另一个Select in SQL查询中运行Update Statement

2 个答案: