Use of Regular Expression in Oracle

Q

How To Use Regular Expression in Pattern Match Conditions in Oracle?

✍: 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

⇒ Understanding SQL DDL Statements for Oracle

⇐ Use LIKE Conditions in Oracle

⇑ Understanding SQL Language Basics for Oracle

⇑⇑ Oracle Database Tutorials

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