database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-09-02 04:21:28 +03:00
Code Activity

Remove pg_stats_ext view

Browse Source 
It was created as equivalent of pg_stats, but since the code underlying
pg_statistic_ext is more convenient than the one for pg_statistic,
pg_stats_ext is no longer useful.

Author: David Rowley
Reviewed-by: Tomas Vondra
Discussion: https://postgr.es/m/CAKJS1f9zAkPUf9nQrqpFBAsrOHvb5eYa2FVNsmCJy1wegcO_TQ@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2017-04-13 11:35:22 -03:00
parent 06fc54cd43
commit 3d5facfd9a
3 changed files with 5 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
doc/src/sgml/planstats.sgml
View File

@@ -520,17 +520,15 @@ EXPLAIN ANALYZE SELECT * FROM t WHERE a = 1 AND b = 1;
<para>
Similarly to per-column statistics, extended statistics are stored in
a system catalog called <structname>pg_statistic_ext</structname>, but
there is also a more convenient view <structname>pg_stats_ext</structname>.
a system catalog called <structname>pg_statistic_ext</structname>.
To inspect the statistics <literal>s1</literal> defined above,
you may do this:
<programlisting>
SELECT tablename, staname, attnums, depsbytes
FROM pg_stats_ext WHERE staname = 's1';
tablename | staname | attnums | depsbytes
-----------+---------+---------+-----------
t | s1 | 1 2 | 40
SELECT staname,stadependencies FROM pg_statistic_ext WHERE staname = 's1';
staname | stadependencies
---------+--------------------------------------------
s1 | [{1 => 2 : 1.000000}, {2 => 1 : 1.000000}]
(1 row)
</programlisting>