将一张表的字段更新到另一张表中

语法:

MySQL:

UPDATE a,b  
SET a.1=b.1  
WHERE a.2=b.2 

实例

update expense_voucher as ev,inventory as iv set ev.storage_time= iv.first_warehousing_time where ev.store_item_id = iv.id and ev.rksj is null

参考:

链接

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