1、^ 查询以field开头的字符串

SELECT *
FROM customers 
WHERE last_name REGEXP '^field'

2、$ 查询以field结尾的字符串

SELECT *
FROM customers 
WHERE last_name REGEXP 'field$'

3、| 查询含有field或mac或rose结尾的字符串

SELECT *
FROM customers 
WHERE last_name REGEXP 'field|mac|rose'

3、^ , | 查询以field开头或含有mac或rose的字符串

SELECT *
FROM customers 
WHERE last_name REGEXP '^field|mac|rose'

4、$ , | 查询以field结尾或以mac结尾或含有rose的字符串

SELECT *
FROM customers 
WHERE last_name REGEXP 'field$|mac$|rose'

5、[ ] 查询含有‘ge’或‘ie’或‘me’的字符串

SELECT *
FROM customers 
WHERE last_name REGEXP '[gim]e'

6、[ ] 查询含有’a-h’中的字母加上’e’的字符串

SELECT *
FROM customers 
WHERE last_name REGEXP '[a-h]e'