更新 '_posts/mysql.md'

_posts/mysql.md

@@ -6,6 +6,6 @@ cover: https://static.jqwei.com/blog/img/text/2.png
 ## MYSQL相关
 
 ### 查看是否有未提交的日志
-``` mysql
+``` sql
     select * from information_schema.innodb_trx ；
 ```