oracle 匹配

SELECT REGEXP_SUBSTR('abc123def456', '\d+', 1, LEVEL) as num FROM dual CONNECT BY LEVEL

除了匹配数字,我们还可以使用正则表达式匹配邮箱地址。如下:

SELECT * FROM users WHERE REGEXP_LIKE(email, '[a-z]+@[a-z]+\.com')