| From: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Cc: | Anastasia Lubennikova <lubennikovaav(at)gmail(dot)com> |
| Subject: | Index-only scans with btree_gist |
| Date: | 2015-03-26 21:31:59 |
| Message-ID: | 55147ACF.4080405@iki.fi |
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| Lists: | pgsql-hackers |
I've pushed Anastasia's patch to support index-only scans with GiST, and
it's time to add opclasses support for all the opclasses that are not
lossy. I think at least all the btree_gist opclasses need to be
supported, it would be pretty surprising if they didn't support
index-only scans, while some more complex opclasses did.
Attached is a WIP patch for that. It covers all the varlen types that
btree_gist supports, and int2, int4 and oid. The rest of the fixed-width
types should be just a matter of copy-pasting. I'll continue adding
those, but wanted to let people know I'm working on this.
- Heikki
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Add-index-only-scan-support-to-btree_gist.patch | application/x-patch | 87.7 KB |
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