Usually you can gain the most performance in database related programs by carefully analyzing and (re)writing your queries and datamodel, though.

I would like to echo this. I once came onto a project and took reports that were running in 240s and by redoing the schema and the SQL, had those reports running in under 10s. That's an 24x speedup without changing a single part of the Perl code.

I later improved the Perl code and took the reports to under 3s, but that's only a 3x speedup. That means that dealing with the database had 8x the impact as dealing with the Perl.

Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.

In reply to Re^2: Efficiency on Code by dragonchild
in thread Efficiency on Code by Anonymous Monk

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