MYSQL初级学习笔记七：MySQL中使用正则表达式！（视频序号：初级_44)

 1 -- ^匹配字符开始的部分
 2 -- 查询用户名以t开始的用户
 3 SELECT * FROM cms_user WHERE username REGEXP ‘^t‘;
 4 
 5 -- $匹配字符串结尾的部分
 6 
 7 SELECT * FROM cms_user WHERE username REGEXP ‘g$‘;
 8 
 9 
10 -- .代表任意字符
11 
12 SELECT * FROM cms_user WHERE username REGEXP ‘.‘;
13 
14 SELECT * FROM cms_user WHERE username REGEXP ‘r..g‘;
15 
16 SELECT * FROM cms_user WHERE username LIKE ‘r__g‘;
17 
18 -- [字符集合] [lto]
19 
20 SELECT * FROM cms_user WHERE username REGEXP ‘[lto]‘;
21 
22 -- [^字符集合] 除了字符集合中的内容
23 SELECT * FROM cms_user WHERE username REGEXP ‘[^lto]‘;
24 
25 SELECT * FROM cms_user WHERE username REGEXP ‘[^l]‘;
26 
27 INSERT cms_user(username,password,regTime,proId)
28 VALUES(‘lll‘,‘lll‘,138212349,2),
29 (‘ttt‘,‘lll‘,138212349,2),
30 (‘ooo‘,‘lll‘,138212349,2);
31 
32 SELECT * FROM cms_user WHERE username REGEXP ‘[a-k]‘;
33 
34 SELECT * FROM cms_user WHERE username REGEXP ‘[^a-m]‘;
35 
36 SELECT * FROM cms_user WHERE username REGEXP ‘ng|qu‘;
37 
38 SELECT * FROM cms_user WHERE username REGEXP ‘ng|qu|te‘;
39 
40 SELECT * FROM cms_user WHERE username REGEXP ‘que*‘;
41 
42 
43 SELECT * FROM cms_user WHERE username REGEXP ‘t+‘;
44 
45 SELECT * FROM cms_user WHERE username REGEXP ‘que+‘;
46 
47 SELECT * FROM cms_user WHERE username REGEXP ‘que{2}‘;
48 
49 SELECT * FROM cms_user WHERE username REGEXP ‘que{3}‘;
50 
51 SELECT * FROM cms_user WHERE username REGEXP ‘que{1,3}‘;