摘要: 1、select语句基本结构 SELECT select_list [ INTO new_table ] FROM table_name [ WHERE search_condition ] [ GROUP BY group_by_expression ] [ HAVING search_condi 阅读全文
posted @ 2019-05-14 22:39 旧时光里的小鱼儿 阅读(1283) 评论(0) 推荐(0) 编辑