mysql实例
摘要：
```
# 查询结果集建表
CREATE TABLE class3 (SELECT * FROM class GROUP BY cname HAVING COUNT(cname) = 1); # 建表
CREATE TABLE Score( sid INT NOT NULL, cname VARCHAR(20), sscore DECIMAL, sbirth DATE, sgen... 阅读全文
posted @ 2019-05-21 17:37 COMPLEX-B 阅读(120) 评论(0) 推荐(0) 编辑