Re: pgstattuple extension for indexes - Mailing list pgsql-patches

From satoshi nagayasu
Subject Re: pgstattuple extension for indexes
Date
Msg-id 44C9A7F2.2010607@nttdata.co.jp
Whole thread Raw
In response to Re: pgstattuple extension for indexes  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: pgstattuple extension for indexes  (Bruce Momjian <bruce@momjian.us>)
Re: pgstattuple extension for indexes  (Bruce Momjian <bruce@momjian.us>)
List pgsql-patches
Hi folks,

As I said on -PATCHES, I've been working on an utility to get
a b-tree index information. I'm happy to introduce
my new functions to you.

pgstattuple module provides a `pgstatindex()`, and other small
functions, which allow you to get b-tree internal information.
I believe this module will be helpful to know b-tree index deeply.

So please try it, send comment to me, and have fun.

Thanks,
--
NAGAYASU Satoshi <nagayasus@nttdata.co.jp>

-----------------------------------------------------
pgbench=# \x
Expanded display is on.
pgbench=# SELECT * FROM pgstatindex('accounts_pkey');
-[ RECORD 1 ]------+--------
version            | 2
tree_level         | 1
index_size         | 3588096
root_block_no      | 3
internal_pages     | 0
leaf_pages         | 437
empty_pages        | 0
deleted_pages      | 0
avg_leaf_density   | 59.5
leaf_fragmentation | 49.89
-----------------------------------------------------



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