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Document that WITH queries are also called Common Table Expressions.

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Peter Geoghegan, reviewed by Stephen Frost
This commit is contained in:
Robert Haas 2011-01-19 21:15:45 -05:00
parent 357faea82e
commit 92f7eebbbd
2 changed files with 12 additions and 2 deletions
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9
doc/src/sgml/acronyms.sgml
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@ -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>

5
doc/src/sgml/queries.sgml
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@ -1525,7 +1525,7 @@ 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>
@ -1539,7 +1539,8 @@ SELECT <replaceable>select_list</replaceable> FROM <replaceable>table_expression
<para>
<literal>WITH</> provides a way to write subqueries for use in a larger
query. The subqueries can be thought of as defining
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: