跟换图片源

This commit is contained in:
罗祥
2020-05-25 11:18:05 +08:00
parent f039b42ea7
commit 57ce004275
34 changed files with 234 additions and 234 deletions

View File

@@ -14,7 +14,7 @@ mysql> EXPLAIN SELECT * FROM employees;
注:本篇文章的测试数据来源于 MySQL 官方提供的 [Employees Sample Database](https://dev.mysql.com/doc/employee/en/),其数据库结构如下:
<div align="center"> <img src="../pictures/employees-schema.png"/> </div>
<div align="center"> <img src="https://gitee.com/heibaiying/Full-Stack-Notes/raw/master/pictures/employees-schema.png"/> </div>
以下分别介绍 EXPLAIN 输出结果中各个字段的含义: