Tom Lane wrote:
Adding cache lookups for the enum rows to the comarison routines made a REINDEX on a 1m row table where the index is on an enum column (the enum has 500 randomly ordered labels) jump from around 10s to around 70s.

Hmmm... that's bad, but I bet it's still less than the cost of comparing
NUMERICs.  Also, did you make any attempt to avoid repetitive cache
lookups by storing a pointer in fn_extra (cf array comparisons)?

                        

No. Will work on that. Thanks.

cheers

andrew

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