随笔分类 -  SQL

SQL - AND & OR 运算符
摘要：select * from websites; SELECT * FROM Websites WHERE country='CN' AND alexa > 50; SELECT * FROM Websites WHERE country='USA' OR country='CN'; SELECT * 阅读全文
posted @ 2020-08-25 09:31 故屿γ 阅读(180) 评论(0) 推荐(0)