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更新 数据库管理.md

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wxin 2025-03-11 16:47:28 +08:00
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@ -14,7 +14,7 @@
作用：用于存储用户的年龄、游戏的Level、经验值等
![](accents\images-202503110011.png)
![](http://182.92.143.66:40072/directlink/img/mysql/images-202503110011.png)
**浮点数类型**
@ -22,7 +22,7 @@
作用：用于存储用户的身高、体重、薪水等
![](accents\images-202503110012.png)
![](http://182.92.143.66:40072/directlink/img/mysql/images-202503110012.png)
```SQL
float(5,3) # 5宽度 3精度
@ -91,7 +91,7 @@ ERROR 1265 (01000): Data truncated for column 'e' at row 1
作用：用于存储用户的注册时间，文章的发布时间，文章的更新时间，员工的入职时间等
![](accents\images-202503110013.png)
![](http://182.92.143.66:40072/directlink/img/mysql/images-202503110013.png)
```SQL
mysql> create table t2(