From cf00d59335f2f695b22628239ffe1f99f7db07a7 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sat, 16 Dec 2000 18:22:53 +0000
Subject: [PATCH] Clean up some bogosities in description of target lists.
---
doc/src/sgml/syntax.sgml | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml
index 0537f531ef4..15bfda8d2c8 100644
--- a/doc/src/sgml/syntax.sgml
+++ b/doc/src/sgml/syntax.sgml
@@ -1,5 +1,5 @@
<!--
-$Header: /cvsroot/pgsql/doc/src/sgml/syntax.sgml,v 1.26 2000/12/14 22:30:56 petere Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/syntax.sgml,v 1.27 2000/12/16 18:22:53 tgl Exp $
-->
<chapter id="syntax">
@@ -791,7 +791,7 @@ sqrt(emp.salary)
<para>
A <firstterm>target list</firstterm>
- is a parenthesized, comma-separated list of one or more elements, each
+ is a comma-separated list of one or more elements, each
of which must be of the form:
<synopsis>
@@ -799,16 +799,13 @@ sqrt(emp.salary)
</synopsis>
where <replaceable>result_attname</replaceable>
- is the name of the attribute to be created (or an
- already existing attribute name in the case of update statements.) If
+ is the name to be assigned to the created column. If
<replaceable>result_attname</replaceable>
- is not present, then
- <replaceable>a_expr</replaceable>
- must contain only one attribute name which is assumed to be the name
- of the result field. In <productname>Postgres</productname>
- default naming is only used if
- <replaceable>a_expr</replaceable>
- is an attribute.
+ is not present, then <productname>Postgres</productname> selects a
+ default name based on the contents of <replaceable>a_expr</replaceable>.
+ If <replaceable>a_expr</replaceable> is a simple attribute reference
+ then the default name will be the same as that attribute's name, but
+ otherwise the implementation is free to assign any default name.
</para>
</sect2>
--
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