摘要: 菜鸟教程地址:https://www.runoob.com/sql/sql-tutorial.html 测试SQL 查询自服务用户所属的客户经理: SELECT idUser,user FROM user WHERE idUser = (SELECT creator FROM customer_in 阅读全文
posted @ 2022-07-22 17:00 莫离m 阅读(63) 评论(0) 推荐(0) 编辑