CMU-cs445:SQL基础 Posted on 2022-09-25 Edited on 2022-10-19 In 数据库 Views: Symbols count in article: 101 Reading time ≈ 1 mins. 基础SQL 聚合函数AVG，SUM，MIN，MAX等 GROUP BY HAVING UPPER LIKE(%代替*，_代替?) CONCAT CREAT TABLE ORDER BY LIMIT OFFSET 高级SQL 嵌套查询