摘要: ##sql语句 1.关联查询修改字段值 update 表A left join 表B on A.id=B.id set A.a=B.b where id>20 2.select in 指定排序 select * from A where in ('a','b','c')oder by field ( 阅读全文
posted @ 2021-09-15 18:32 shamozhicheng 阅读(22) 评论(0) 推荐(0) 编辑