Oracle Database Interview Question:

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

Submitted by: Administrator

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 ('globalguideline.com', '.*ggl.*',
'i') THEN 'TRUE' ELSE 'FALSE' END FROM DUAL;
TRUE

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

SELECT CASE WHEN REGEXP_LIKE ('globalguideline.com', '^F.*','i')
THEN 'TRUE' ELSE 'FALSE' END FROM DUAL;
TRUE
Submitted by: Administrator