database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-28 18:48:04 +03:00
Code Activity

Doc: Miscellaneous doc updates for MERGE.

Browse Source 
Update a few places in the documentation that should mention MERGE
among the list of applicable commands. In a couple of places, a
slightly more detailed description of what happens for MERGE seems
appropriate.

Reviewed by Alvaro Herrera.

Discussion: http://postgr.es/m/CAEZATCWqHLcxab89ATMQZNGFG_mxDPM%2BjzkSbXKD3JYPfRGvtw%40mail.gmail.com
This commit is contained in:
Dean Rasheed
2023-02-26 09:06:04 +00:00
parent 87f3667ec0
commit ee7e8f3838
12 changed files with 58 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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

@@ -2064,8 +2064,8 @@ SELECT <replaceable>select_list</replaceable> FROM <replaceable>table_expression
in a <literal>WITH</literal> clause can be a <command>SELECT</command>,
<command>INSERT</command>, <command>UPDATE</command>, or <command>DELETE</command>; and the
<literal>WITH</literal> clause itself is attached to a primary statement that can
also be a <command>SELECT</command>, <command>INSERT</command>, <command>UPDATE</command>, or
<command>DELETE</command>.
be a <command>SELECT</command>, <command>INSERT</command>, <command>UPDATE</command>,
<command>DELETE</command>, or <command>MERGE</command>.
</para>
<sect2 id="queries-with-select">
@@ -2587,7 +2587,8 @@ SELECT * FROM w AS w1 JOIN w AS w2 ON w1.f = w2.f;
<para>
The examples above only show <literal>WITH</literal> being used with
<command>SELECT</command>, but it can be attached in the same way to
<command>INSERT</command>, <command>UPDATE</command>, or <command>DELETE</command>.
<command>INSERT</command>, <command>UPDATE</command>,
<command>DELETE</command>, or <command>MERGE</command>.
In each case it effectively provides temporary table(s) that can
be referred to in the main command.
</para>
@@ -2597,8 +2598,9 @@ SELECT * FROM w AS w1 JOIN w AS w2 ON w1.f = w2.f;
<title>Data-Modifying Statements in <literal>WITH</literal></title>
<para>
You can use data-modifying statements (<command>INSERT</command>,
<command>UPDATE</command>, or <command>DELETE</command>) in <literal>WITH</literal>. This
You can use most data-modifying statements (<command>INSERT</command>,
<command>UPDATE</command>, or <command>DELETE</command>, but not
<command>MERGE</command>) in <literal>WITH</literal>. This
allows you to perform several different operations in the same query.
An example is: