SELECT `字段` FROM `表1` WHERE 条件=20220909 and NOT EXISTS (SELECT `字段` FROM Waredata WHERE 表1.字段= 表2.字段 and 条件=20220909); 表1的字段要跟表2的字段相同 Last modification:September 10, 2022 © Allow specification reprint Support Appreciate the author AliPayWeChat Like 0 反正也没人会打赏