Horton

Re: WIP: Covering + unique indexes.

Peter Geoghegan <pg@bowt.ie>

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From: Peter Geoghegan <pg@bowt.ie>
To: Andrew Gierth <andrew@tao11.riddles.org.uk>
Cc: Teodor Sigaev <teodor@sigaev.ru>, Alexander Korotkov <a.korotkov@postgrespro.ru>, Anastasia Lubennikova <a.lubennikova@postgrespro.ru>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2018-04-07T20:56:44Z
Lists: pgsql-hackers 
On Sat, Apr 7, 2018 at 1:52 PM, Andrew Gierth
<andrew@tao11.riddles.org.uk> wrote:
> Support for testing amcaninclude via
> pg_indexam_has_property(oid,'can_include') seems to be missing?
>
> Also the return values of pg_index_column_has_property for included
> columns seem a bit dubious... should probably be returning NULL for most
> properties except 'returnable'.
>
> I can look at fixing these for you if you like?

I'm happy to accept your help with it, for one.

-- 
Peter Geoghegan

Commits

  1. Adjust INCLUDE index truncation comments and code.

  2. Add commentary explaining why MaxIndexTuplesPerPage calculation is safe.

  3. Indexes with INCLUDE columns and their support in B-tree

  4. Add amcheck verification of heap relations belonging to btree indexes.

  5. Doc: move info for btree opclass implementors into main documentation.

  6. Doc: mention that you can't PREPARE TRANSACTION after NOTIFY.

  7. Remove dedicated B-tree root-split record types.

  8. Restructure index access method API to hide most of it at the C level.

  9. Split _bt_insertonpg to two functions.

  10. Major overhaul of btree index code. Eliminate special BTP_CHAIN logic for