mysql 跨库连接查询,分同一个实例下和不同实例,同一实例下的不同库,可以直接写,不同实例暂时无法像oracle那样建立dblink后直接写语句。
UPDATE ri_assistance_apply AS a INNER JOIN `sipop-account`.ri_account_user AS b ON a.user_id=b.user_id
JOIN `sipop-account`.ri_account_person c ON b.user_rel_id = c.person_id
SET a.operator_name = c.person_name,a.operator_phone = c.person_phone,
a.operator_card_no = c.person_idcard,a.operator_login_name = b.user_name;