Tom Lane 6563e9e2e8 Add a "provariadic" column to pg_proc to eliminate the remarkably expensive ...

need to deconstruct proargmodes for each pg_proc entry inspected by
FuncnameGetCandidates().  Fixes function lookup performance regression
caused by yesterday's variadic-functions patch.

In passing, make pg_proc.probin be NULL, rather than a dummy value '-',
in cases where it is not actually used for the particular type of function.
This should buy back some of the space cost of the extra column.

2008-07-16 16:55:24 +00:00

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