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42 lines
1.0 KiB
Markdown
42 lines
1.0 KiB
Markdown
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https://www.cnblogs.com/jhin-wxy/p/8965888.html
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### 1、使用processlist，但是有个弊端，就是只能查看正在执行的sql语句，对应历史记录，查看不到。好处是不用设置，不会保存。
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```sql
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use information_schema;
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show processlist;
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```
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或者：
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```sql
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select * from information_schema.`PROCESSLIST` where info is not null;
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```
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------------
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### 2、开启日志模式
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> 需要root权限
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#### 1、设置
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```sql
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-- 日志开启
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SET GLOBAL log_output = 'TABLE'; SET GLOBAL general_log = 'ON';
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-- 日志关闭
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SET GLOBAL log_output = 'TABLE'; SET GLOBAL general_log = 'OFF';
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```
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#### 2、查询
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```sql
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SELECT * from mysql.general_log ORDER BY event_time DESC;
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```
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#### 3、清空表（delete对于这个表，不允许使用，只能用truncate）
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```sql
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-- truncate table mysql.general_log;
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```
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在查询sql语句之后，在对应的`C:\Program Files\MySQL\MySQL Server 5.7\data`文件夹下面有对应的log记录
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ps:在查询到所需要的记录之后，应尽快关闭日志模式，占用磁盘空间比较大
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