摘要: ORACLE select * from tableselect name,sno from table 去重select distinct country from table where子语句 提取满足特定条件的记录select * from table where country='CN' A 阅读全文
posted @ 2023-05-23 17:40 睡醒了不起的盖茨比 阅读(23) 评论(0) 推荐(0) 编辑