Home >Backend Development >PHP Tutorial >MYSQL 关联表 统计请教
MYSQL 关联表 统计请教
- WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOriginal
- 2016-06-23 13:14:42999browse
有2个表A，B
表A
uid gender (1男，2女)
1 1
2 2
3 1
4 2
5 1
表B
uid department （1客服部，2运营部）
1 1
2 1
3 2
4 2
5 1
怎么样写 SELECT COUNT(*)，可以
统计 客服部，男性的 数量
谢谢
回复讨论(解决方案)
SELECT COUNT(*) from A, B where A.uid=B.uid and A.gender =1 and B.department=1
谢谢版主
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：简单小问题Next article：来个高手啊，一个困扰我很久的php问题,求帮助