Don't bother with C function, use SQL function instead. You could get a 50% speedup.

Is this always the case when using SQL instead of the C API to get values or only the function 'call' itself? We are thinking to use C functions which are optimized for the G5 altivec unit.

SQL functions are stored prepared, so there is less per-call query planning overhead. I'm not sure there'd be much advantage to doing them in C...


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