update语句出错,求指正 update t_marketset t_market.tellername=t_teller.name where t_market.tellerid=t_teller.id; 报错 ORA-00904: "t_teller"."id": 标识符无效;
但是 select t_teller.id from t_teller ;却能够查出记录。 why? 出错
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两张表没连接关系 update t_market set tellername=(select name from t_teller where id=t_market.tellerid);
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------解决方案-------------------- update t_market set t_market.tellername = t_teller.name where exists (select 1 from t_teller where t_teller.id = t_market.tellerid);