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学习mysql的一些记录_MySQL

Jun 01, 2016 pm 01:43 PM
mysql storage

bitsCN.com SHOW VARIABLES;/**查看服务器实际运行参数值**/
02     /*查询是否存在  此存储过程。如果存在则删除*/
03     DROP PROCEDURE IF EXISTS helloword
04     /*测试存储过程*/
05     DELIMITER //
06     CREATE PROCEDURE helloword()
07     BEGIN
08         SELECT 'hellor word';
09     END
10     /*调用存储过程*/
11     CALL helloword
12    
13     DROP PROCEDURE IF EXISTS pr_add
14     /*测试在存储过程中选择语句*/
15     DELIMITER //
16     CREATE PROCEDURE pr_add(
17     a INT,
18     b INT)
19     BEGIN
20     IF a IS NULL THEN
21     SET a=0;
22     END IF;
23     SELECT a+b;
24     END
25     /*调用*/
26     CALL pr_add(NULL,1);
27     /*删除存储过程*/
28     DROP PROCEDURE pr_add;
29     /*创建视图*/
30     CREATE VIEW teabc AS SELECT * FROM abcd WHERE abc='aa'
31     SELECT * FROM teabc
32     /*查询用户名权限*/
33     SHOW GRANTS FOR root@localhost
34     /*创建视图  触发器支持事件  insert update delete*/
35     /*此含义:如果abcd这张表插入记录时 运行begin内语句SetUserHome 为触发品名称*/
36     DELIMITER //
37     CREATE TRIGGER SetUserHome BEFORE INSERT ON abcd
38     FOR EACH ROW 
39     BEGIN 
40     INSERT INTO stime VALUE(NOW(),'hello word');
41     END
42    
43     /*操作用户相关*/
44     /*权限:select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file
45     如果允许全部权限,可以用all或者all privileges代替以上权限。*/
46     /*alter 修改表和索引create 创建数据库和表delete 删除表中已有的记录drop 抛弃(删除)数据库和表index 创建或抛弃索引
47     insert 向表中插入新行reference 未用select 检索表中的记录update 修改现存表记录file 读或写服务器上的文件
48     process 查看服务器中执行的线程信息或杀死线程reload 重载授权表或清空日志、主机缓存或表缓存。shutdown 关闭服务器
49     all 所有;all privileges同义词usage 特殊的“无权限”权限*/
50     /*修改用户密码 需要重启服务*/
51     UPDATE USER SET PASSWORD=PASSWORD('zhouhui') WHERE USER='root';
52     /*创建用户  大意:可以操作test数据库的所有表  mfkwfc只能由127.0.0.1登录  密码是123*/
53     GRANT ALL PRIVILEGES ON test.* TO mfkwfc@127.0.0.1 IDENTIFIED BY '123';
54     /*取消用户此权力*/
55     REVOKE INSERT ON test.* FROM mfkwfc@127.0.0.1;
56     /*添加用户此权力*/
57     GRANT INSERT ON test.* TO mfkwfc@127.0.0.1
58     /*修改密码  USAGE无权限的意思*/
59     GRANT USAGE ON test.* TO mfkwfc@127.0.0.1 IDENTIFIED BY 'mfkwfc';
60     /*刷新权限*/
61     FLUSH PRIVILEGES;
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