How To Use Regular Expression in Pattern Match Conditions

Q

How To Use Regular Expression in Pattern Match Conditions? - Oracle DBA FAQ - Understanding SQL Basics

✍: FYIcenter.com

A

If you have a pattern that is too complex for LIKE to handle, you can use the regular expression pattern patch function: REGEXP_LIKE().

The following script provides you some good examples:

SELECT CASE WHEN REGEXP_LIKE ('FYICenter.com', '.*fyi.*',
  'i') THEN 'TRUE' ELSE 'FALSE' END FROM DUAL;
TRUE

SELECT CASE WHEN REGEXP_LIKE ('FYICenter.com', '.*com$',
  'i') THEN 'TRUE' ELSE 'FALSE' END FROM DUAL;
TRUE

SELECT CASE WHEN REGEXP_LIKE ('FYICenter.com', '^F.*','i')
  THEN 'TRUE' ELSE 'FALSE' END FROM DUAL;
TRUE

2007-04-22, 5141👍, 0💬

💬 2016-07-06 Julie: Good to know. Thanks.

💬 2010-10-11 Coleen: I have an Oracle table with a column (seq_num) that needs to populated with sequential nbrs based on a group. For example, I hav...

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