35周正常羊水值是多少:update sql语句如何写

来源:百度文库 编辑:杭州交通信息网 时间:2024/04/27 17:18:48
现在我有两个表,表一equipment,表二oldequipment.都包含字段(eqID,eqtype,eqNUM,eqMONEY)其中eqID是主键.请问如何写 sql语句实现,将表一的eqID="ce2006"的数据更新到表二的eqID="ce2005"中.谢谢!

我觉得这样可行一点
UPDATE oldequipment SET oldequipment.eqID=equipment.eqID,
oldequipment.eqtype=equipment.eqtype,
oldequipment.eqNUM=equipment.eqNUM,
oldequipment.eqMONEY=equipment.eqMONEY,
where
oldequipment='ce2005' and
equipemnt='ce2006'

我也不十分清楚,你试试下面这个嵌套语句:

UPDATE oldequipment SET eqID=(SELECT eqID FROM equipment WHERE quID='ce2006') WHERE eqID='2005'