Actually I'll be executing this in Teradata as my database is only available there and also the version is 15.0 for the Teradata.

How do we add leap years in the following query along with the month of February?

CASE

WHEN SUBSTR(RELEASE_DATE,1,4)<1900 OR SUBSTR(RELEASE_DATE,1,4)>9999 THEN '1900-01-01'

WHEN SUBSTR(RELEASE_DATE,6,2)>12 THEN '1900-01-01'

WHEN SUBSTR(RELEASE_DATE,9,2)>31 THEN '1900-01-01'

WHEN SUBSTR(RELEASE_DATE,6,2)=2 AND SUBSTR(RELEASE_DATE,9,2)>29...