Bruce Momjian <[EMAIL PROTECTED]> writes: > Tom Lane wrote: >> Has anyone bothered to measure the overhead added by having to mask to >> fetch or store the natts value? This is not a zero-cost improvement.
> Tom, how should this be tested? I assume some loop of the same query > over and over again. I'd be satisfied by a demonstration of no meaningful difference in pgbench numbers. It's *probably* not a problem, but you never know if you don't check... regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match