Question

我试图通过在查询中传递值来更新表。请注意，该值不是来自另一个表。但是，我用来识别整个板块中常见项目的关键是在另一个表中。我如何加入这两个以确保我更新正确的记录？数据库：Oracle 10g 在Toad中运行查询请帮忙。

这是我到目前为止所做的：

UPDATE HCS.ITEMINVENTORY
SET HCS.ITEMINVENTORY.BATCHGROUPING = 'ADMIXED'
WHERE (ITEMINVENTORY.FACILITYCODE = 'B')
    AND (ITEMINVENTORY.FORMULARYSTATUS = 'Y')
    AND (ITEMDISPENSESIZE.ITEMID = ITEMINVENTORY.ITEMID)"Notice the second table"
    AND (HCS.ITEMNUMBER IN (18501346,18800284)

Answer 1

如果您只想应用ITEMDISPENSESIZE中存在的更新，请使用EXISTS子查询。像这样：

UPDATE HCS.ITEMINVENTORY
SET HCS.ITEMINVENTORY.BATCHGROUPING = 'ADMIXED'
WHERE (ITEMINVENTORY.FACILITYCODE = 'B')
    AND (ITEMINVENTORY.FORMULARYSTATUS = 'Y')
    AND EXISTS (
        SELECT 1
        FROM   ITEMDISPENSESIZE
        WHERE  ITEMDISPENSESIZE.ITEMID = ITEMINVENTORY.ITEMID
        AND    ITEMDISPENSESIZE.ITEMNUMBER IN ('18501346','18800284')
    );

Answer 2

试试这个：

update Table
   set column1 = 'new value'
   from table1 a, table2 b
   where a.column2 = x 
   and a.column3 = y
   and b.column4 = z

使用join更新表

2 个答案: