| 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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| Lists: | pgsql-hackers |
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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