Re: Hash and bools

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Scott Marlowe <scott(dot)marlowe(at)ihs(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Hash and bools
Date: 2002-06-22 21:45:09
Message-ID: 4754.1024782309@sss.pgh.pa.us
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Scott Marlowe <scott(dot)marlowe(at)ihs(dot)com> writes:
> During the discussion of bools and hash index and partial indexes and
> index growth and everything else, I tried to make a partial index on a
> bool field and got the error that "data type bool has no default operator
> for class hash..."

Well, no. I can't see much point in hashing for a datatype with only
two values. (Of course, btree probably sucks too in this case.)

You could probably gin one up pretty quickly using the support routines
for char_ops, if you want one for testing.

regards, tom lane

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