postgres.git / summary / log / commit / refs
commit ba3afc88d2b81fc609cda8504ee7b54c54b379d7
Author: Robert Haas <rhaas@postgresql.org>
Date: Thu Jan 20 02:21:33 2011 +0000
First released in: 9.1.0, 8.4.7, 9.0.3
Document that WITH queries are also called Common Table Expressions.
Peter Geoghegan, reviewed by Stephen Frost
doc/src/sgml/acronyms.sgml | 9 +++++++++
doc/src/sgml/queries.sgml | 5 +++--
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/doc/src/sgml/acronyms.sgml b/doc/src/sgml/acronyms.sgml
index 4f561f6fb76..de4e1e027fe 100644
--- a/doc/src/sgml/acronyms.sgml
+++ b/doc/src/sgml/acronyms.sgml
@@ -98,6 +98,15 @@
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><acronym>CTE</acronym></term>
+ <listitem>
+ <para>
+ <link linkend="queries-with">Common Table Expression</link>
+ </para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term><acronym>CVE</acronym></term>
<listitem>
diff --git a/doc/src/sgml/queries.sgml b/doc/src/sgml/queries.sgml
index 26bc2243843..1e29852b40e 100644
--- a/doc/src/sgml/queries.sgml
+++ b/doc/src/sgml/queries.sgml
@@ -1516,7 +1516,7 @@ SELECT <replaceable>select_list</replaceable> FROM <replaceable>table_expression
<sect1 id="queries-with">
- <title><literal>WITH</literal> Queries</title>
+ <title><literal>WITH</literal> Queries (Common Table Expressions)</title>
<indexterm zone="queries-with">
<primary>WITH</primary>
@@ -1530,7 +1530,8 @@ SELECT <replaceable>select_list</replaceable> FROM <replaceable>table_expression
<para>
<literal>WITH</> provides a way to write subqueries for use in a larger
- <literal>SELECT</> query. The subqueries can be thought of as defining
+ <literal>SELECT</> query. The subqueries, which are often referred to as Common Table
+ Expressions or <acronym>CTE</acronym>s, can be thought of as defining
temporary tables that exist just for this query. One use of this feature
is to break down complicated queries into simpler parts. An example is:
[parent: d8b0495f9637]