>>Did you try having an index on the group by expression?
>
>Could you give me an example of what you mean by that?
No, I cannot, I was mistaken, Naomi show me the light.
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges