I always try to build the database avoiding any
NULL values in my tables, and I have successfully had done this so far. (Hey, I am very new to database design.)
But still there are times when saving user's data, there may be null values or empty strings.
Can you please guide me to get the effect of having
NULL values or empty strings in a database, where
SELECT is most used?
NOTE: Specifically for MySQL 5.5 or later.