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Rename columns in new pg_statistic_ext catalog

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The new catalog reused a column prefix "sta" from pg_statistic, but this
is undesirable, so change the catalog to use prefix "stx" instead.
Also, rename the column that lists enabled statistic kinds as "stxkind"
rather than "enabled".

Discussion: https://postgr.es/m/CAKJS1f_2t5jhSN7huYRFH3w3rrHfG2QU7hiUHsu-Vdjd1rYT3w@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2017-04-17 18:34:29 -03:00
parent 8c5cdb7f4f
commit ee6922112e
22 changed files with 142 additions and 140 deletions
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22
doc/src/sgml/catalogs.sgml
View File

@ -4291,21 +4291,21 @@
<tbody>
<row>
<entry><structfield>starelid</structfield></entry>
<entry><structfield>stxrelid</structfield></entry>
<entry><type>oid</type></entry>
<entry><literal><link linkend="catalog-pg-class"><structname>pg_class</structname></link>.oid</literal></entry>
<entry>The table that the described columns belongs to</entry>
</row>
<row>
<entry><structfield>staname</structfield></entry>
<entry><structfield>stxname</structfield></entry>
<entry><type>name</type></entry>
<entry></entry>
<entry>Name of the statistic.</entry>
</row>
<row>
<entry><structfield>stanamespace</structfield></entry>
<entry><structfield>stxnamespace</structfield></entry>
<entry><type>oid</type></entry>
<entry><literal><link linkend="catalog-pg-namespace"><structname>pg_namespace</structname></link>.oid</literal></entry>
<entry>
@ -4314,24 +4314,26 @@
</row>
<row>
<entry><structfield>staowner</structfield></entry>
<entry><structfield>stxowner</structfield></entry>
<entry><type>oid</type></entry>
<entry><literal><link linkend="catalog-pg-authid"><structname>pg_authid</structname></link>.oid</literal></entry>
<entry>Owner of the statistic</entry>
</row>
<row>
<entry><structfield>staenabled</structfield></entry>
<entry><structfield>stxkind</structfield></entry>
<entry><type>char[]</type></entry>
<entry></entry>
<entry>
An array with the modes of the enabled statistic types, encoded as
<literal>d</literal> for ndistinct coefficients.
An array with the modes of the enabled statistic types. Valid values
are:
<literal>d</literal> for ndistinct coefficients,
<literal>f</literal> for functional dependencies.
</entry>
</row>
<row>
<entry><structfield>stakeys</structfield></entry>
<entry><structfield>stxkeys</structfield></entry>
<entry><type>int2vector</type></entry>
<entry><literal><link linkend="catalog-pg-attribute"><structname>pg_attribute</structname></link>.attnum</literal></entry>
<entry>
@ -4342,7 +4344,7 @@
</row>
<row>
<entry><structfield>standistinct</structfield></entry>
<entry><structfield>stxndistinct</structfield></entry>
<entry><type>pg_ndistinct</type></entry>
<entry></entry>
<entry>
@ -4351,7 +4353,7 @@
</row>
<row>
<entry><structfield>stadependencies</structfield></entry>
<entry><structfield>stxdependencies</structfield></entry>
<entry><type>pg_dependencies</type></entry>
<entry></entry>
<entry>

4
doc/src/sgml/planstats.sgml
View File

@ -525,8 +525,8 @@ EXPLAIN ANALYZE SELECT * FROM t WHERE a = 1 AND b = 1;
you may do this:
<programlisting>
SELECT staname,stadependencies FROM pg_statistic_ext WHERE staname = 's1';
staname | stadependencies
SELECT stxname,stxdependencies FROM pg_statistic_ext WHERE stxname = 's1';
stxname | stxdependencies
---------+--------------------------------------------
s1 | [{1 => 2 : 1.000000}, {2 => 1 : 1.000000}]
(1 row)