Re: list of extended statistics on psql

On Sun, Jan 17, 2021 at 03:31:57PM +0100, Tomas Vondra wrote:
> I've reverted the commit - once we find the right way to handle this, I'll
> get it committed again.

Please consider these doc changes for the next iteration.

commit 1a69f648ce6c63ebb37b6d8ec7c6539b3cb70787
Author: Justin Pryzby <pryzbyj(at)telsasoft(dot)com>
Date: Sat Jan 16 17:47:35 2021 -0600

doc review: psql \dX 891a1d0bca262ca78564e0fea1eaa5ae544ea5ee

diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index aaf55df921..a678a69dfb 100644
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -1928,15 +1928,15 @@ testdb=&gt;
is specified, only those extended statistics whose names match the
pattern are listed.
If <literal>+</literal> is appended to the command name, each extended
- statistics is listed with its size.
+ statistic is listed with its size.
</para>

<para>
- The column of the kind of extended stats (e.g. Ndistinct) shows some statuses.
+ The column of the kind of extended stats (e.g. Ndistinct) shows its status.
"requested" means that it needs to collect statistics by <link
linkend="sql-analyze"><command>ANALYZE</command></link>.
"built" means <link linkend="sql-analyze"><command>ANALYZE</command></link> was
- finished, and the planner can use it. NULL means that it doesn't exists.
+ run, and statistics are available to the planner. NULL means that it doesn't exist.
</para>
</listitem>
</varlistentry>