Home >Database >Mysql Tutorial >请大神给我写条sql查询语句，mysql 数据库，谢谢
请大神给我写条sql查询语句，mysql 数据库，谢谢
- WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOriginal
- 2016-06-06 09:33:42902browse
mysqlsql数据库
查询第一张表为空,再去查询第2张表,不为空就取第一张表里的数据，第一张表的数据是和
第2张表里的一样的，是多表查询，谢谢，坐等大神来赐教
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：图片-mysql语句求指明错误?Next article：mysql-数据库foreign key error 1215