最简单的方法之一是使用公共表表达式(因为你已经在SQL 2005上了):

with cte as (
select
    im.itemid
    ,im.sku as iSku
    ,gm.SKU as GSKU
    ,mm.ManufacturerId as ManuId
    ,mm.ManufacturerName
    ,im.mf_item_number
    ,mm.ManufacturerID
    , <your other field>
from 
    item_master im, group_master gm, Manufacturer_Master mm 
where
    im.mf_item_number like 'STA%'
    and im.sku=gm.sku
    and gm.ManufacturerID = mm.ManufacturerID
    and gm.manufacturerID=34)
update cte set mf_item_number = <your other field>

查询执行引擎将自行确定如何更新记录。

上面没有使用sql，这里有一个基于连接语句更新表的例子。

UPDATE p
SET    p.category = c.category
FROM   products p
       INNER JOIN prodductcatagories pg
            ON  p.productid = pg.productid
       INNER JOIN categories c
            ON  pg.categoryid = c.cateogryid
WHERE  c.categories LIKE 'whole%'

试试这样……

Update t1.Column1 = value 
from tbltemp as t1 
inner join tblUser as t2 on t2.ID = t1.UserID 
where t1.[column1]=value and t2.[Column1] = value;

您可以使用以下查询:

UPDATE im
SET mf_item_number = (some value) 
FROM item_master im
JOIN group_master gm
    ON im.sku = gm.sku 
JOIN Manufacturer_Master mm
    ON gm.ManufacturerID = mm.ManufacturerID
WHERE im.mf_item_number like 'STA%' AND
      gm.manufacturerID = 34    `sql`

UPDATE im
SET mf_item_number = gm.SKU --etc
FROM item_master im
JOIN group_master gm
    ON im.sku = gm.sku 
JOIN Manufacturer_Master mm
    ON gm.ManufacturerID = mm.ManufacturerID
WHERE im.mf_item_number like 'STA%' AND
      gm.manufacturerID = 34

为了说清楚…UPDATE子句可以引用FROM子句中指定的表别名。所以在这种情况下im是有效的

通用的例子

UPDATE A
SET foo = B.bar
FROM TableA A
JOIN TableB B
    ON A.col1 = B.colx
WHERE ...

我一直在尝试做这样的事情，我刚刚想到尝试使用以下语法(使用元组)

update dstTable T
set (T.field1, T.field2, T.field3) = 
       (select S.value1, S.value2, S.value3
        from srcTable S
         where S.key = T.Key);

令人惊讶的是，它奏效了。我用的是甲骨文(我想是12c)。这是标准SQL或Oracle专用的吗?

注意:在我的例子中，我正在更新整个表(填充新列)。更新没有where子句，因此将更新所有行。当子查询不返回行时，字段将被设置为NULL。(并且它不能返回多于一行)。