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【MySQL 11】注释

程序员文章站 2022-05-16 09:17:48
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对MySQL代码进行阅读的时候,发现需要添加注释:

mysql注释符有三种:

1、#… 
2、”- - …” 
3、/…/

依次测试:

1、#…

mysql> select * from person;    #chazhao
+----+------+------+------+-----------+| id | name | sex  | age  | addr      |
+----+------+------+------+-----------+|  1 | Jone | fema |   27 | xianggang |
|  2 | Lily | fema |   25 | *    |
|  3 | Bobe | male |   25 | ximan     ||  4 | Kity | fama |   20 | beijing   |
+----+------+------+------+-----------+

2、”- - …”

mysql> select * from person;    --chazhao
+----+------+------+------+-----------+| id | name | sex  | age  | addr      |
+----+------+------+------+-----------+|  1 | Jone | fema |   27 | xianggang |
|  2 | Lily | fema |   25 | *    |
|  3 | Bobe | male |   25 | ximan     ||  4 | Kity | fama |   20 | beijing   |
+----+------+------+------+-----------+

3、/*…*/

mysql> select */*chazhoa*/ from person; --chazhao
+----+------+------+------+-----------+| id | name | sex  | age  | addr      |
+----+------+------+------+-----------+|  1 | Jone | fema |   27 | xianggang |
|  2 | Lily | fema |   25 | *    |
|  3 | Bobe | male |   25 | ximan     ||  4 | Kity | fama |   20 | beijing   |
+----+------+------+------+-----------+


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相关标签: MySQL ,注释