Hi
I am tuning my database performance.I found that, the order of field expression in index could cause performance issue
IndexA: FieldA, FieldB, FieldC can be slower than IndexA: FieldC, FieldA, FieldB
I would like to know, how to check if the existing index expression is in A,B,C sequence, then only I drop it and re-create it with C,A,B?
Thank you
I am not the most powerful man in this world.
I am not the worst man in this world either.
I just as same as all of you.
I still need to learn from my mistakes...