需求:現在需要更新一個表,但是更新的字段值在另外一個表中。
代碼如下:
UPDATE tb_tmp AS tmp
INNER JOIN tb_customercorp AS corp ON corp. NAME = tmp.corpname
INNER JOIN tb_customerapp AS app ON app.channelid = corp.id
SET app.yx_ratio = tmp.yx_ratio,
app.noimsi_ratio = tmp.noimsi_ratio,
app.repeatimei_ratio = tmp.repeatimei_ratio
講解如下: