It's the believe horoscope predictions become true that is fake. Why you'd think otherwise confuses me.
You're all wrong. Nothing is fake. The belief is real as well. Unfounded by all means, most probably false, but not fake. Very few people fake their belief in horoscopes, most likely the authors (as long as they get their paycheck). But the target audience does genuinely believe there's some truth to the predictions in their horoscopes.
What is the difference between you checking with an IF 'OLD.column1 != NEW.column1' THEN (pseudo code... so don't flame me) or the database engine checks to see if a column was updated?
Well for batch updates it can be a huge thing. The expression can be fed in the query planner, the optimizer can use indexes where available to determine which rows require the trigger and which don't. I'm not saying this happens now (I would doubt it) but the devels have the option to play around with trigger condition expressions whereas procedural code is opaque as far as the query planner's concerned.
There are some people out there who would get sexual or some other kind of gratification out of pictures of anything, including those of banana peels.
you mean this?
"Experience has proved that some people indeed know everything." -- Russell Baker