REGEXP_LIKE，REGEXP_INSTR，REGEXP_SUBSTR，REGEXP_REPLACE

Posted 2020-10-13 tonghaolang

参考：

1. http://www.cnblogs.com/scottckt/archive/2012/10/11/2719562.html
2. http://www.jb51.net/article/38426.htm

-- 创建表
create table REGLIKE
(
  id   NUMBER(3),
  name VARCHAR2(20)
);
--添加记录
insert into REGLIKE (id, name)
values (1, \'aaa111\');
insert into REGLIKE (id, name)
values (2, \'aaa222\');
insert into REGLIKE (id, name)
values (3, \'aaa333\');
insert into REGLIKE (id, name)
values (4, \'333aaa\');
insert into REGLIKE (id, name)
values (5, \'222aaa\');
insert into REGLIKE (id, name)
values (6, \'111aaa\');
commit;
--使用
select * from reglike;
select * from reglike where regexp_like(name,\'^[a-z]\');
select * from reglike where regexp_like(name,\'[a-z]$\');
select REGEXP_INSTR (name,\'[a-z]{3}\') position from reglike ;
select REGEXP_SUBSTR (name,\'[a-z]{3}\') str from reglike ;
select REGEXP_REPLACE (name,\'[a-z]{1}\',\'bbb\',2,2) str from reglike ;