# 关于多表查询
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## 建议单表查询

文章连接: [大连接查询分解好处](https://java.isture.com/db/mysql/mysql-x-optimize-decompose-connection.html)
文章连接: [如何用mp多表查询性能测试](https://developer.aliyun.com/article/858927)

![输入图片说明](https://foruda.gitee.com/images/1678979482724037085/1e74f3e1_1766278.png "屏幕截图")

![输入图片说明](https://foruda.gitee.com/images/1666336728402711844/52788205_1766278.png "屏幕截图")
![输入图片说明](https://foruda.gitee.com/images/1666336945935088277/f60e3288_1766278.png "屏幕截图")
![输入图片说明](https://foruda.gitee.com/images/1666336954686520161/c6c83adc_1766278.png "屏幕截图")

**(上图出自 <高性能MySql>)**