Re: comparing index columns - Mailing list pgsql-hackers

From Tom Lane
Subject Re: comparing index columns
Date
Msg-id 5474.1181657972@sss.pgh.pa.us
Whole thread Raw
In response to comparing index columns  ("Pavan Deolasee" <pavan.deolasee@gmail.com>)
Responses Re: comparing index columns  (Heikki Linnakangas <heikki@enterprisedb.com>)
List pgsql-hackers
"Pavan Deolasee" <pavan.deolasee@gmail.com> writes:
> I don't have much insight into the operator classes and operator families
> and how they work. Where should I look for the related code ?

Primary opclass members are stored right in the Relation data struct for
you.  Since (I trust) you're only supporting this for btree, you could
just use rd_supportinfo[0] which will not even cost an fmgr lookup.
See index_getprocinfo() and callers.
        regards, tom lane


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