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A bit of minor copy-editing.

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This commit is contained in:
Tom Lane
2005-10-23 19:29:49 +00:00
parent 55337e40b3
commit 7d3ab8ac55
2 changed files with 18 additions and 8 deletions
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18
doc/src/sgml/syntax.sgml
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@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/syntax.sgml,v 1.103 2005/08/14 22:19:50 petere Exp $
$PostgreSQL: pgsql/doc/src/sgml/syntax.sgml,v 1.104 2005/10/23 19:29:49 tgl Exp $
-->
<chapter id="sql-syntax">
@@ -260,7 +260,7 @@ UPDATE "my_table" SET "a" = 5;
<literal>\n</literal> is a newline, <literal>\r</literal> is a
carriage return, <literal>\t</literal> is a tab. Also supported is
<literal>\<replaceable>digits</replaceable></literal>, where
<replaceable>ddd</replaceable> represents an octal byte value, and
<replaceable>digits</replaceable> represents an octal byte value, and
<literal>\x<replaceable>hexdigits</replaceable></literal>, where
<replaceable>hexdigits</replaceable> represents a hexadecimal byte value.
(It is your responsibility that the byte sequences you create are
@@ -544,6 +544,16 @@ CAST ( '<replaceable>string</replaceable>' AS <replaceable>type</replaceable> )
is that it does not work for array types; use <literal>::</literal>
or <literal>CAST()</literal> to specify the type of an array constant.
</para>
<para>
The <literal>CAST()</> syntax conforms to SQL. The
<literal><replaceable>type</replaceable> '<replaceable>string</replaceable>'</literal>
syntax is a generalization of the standard: SQL specifies this syntax only
for a few datatypes, but <productname>PostgreSQL</productname> allows it
for all types. The syntax with
<literal>::</literal> is historical <productname>PostgreSQL</productname>
usage, as is the function-call syntax.
</para>
</sect3>
</sect2>
@@ -1105,8 +1115,8 @@ CREATE FUNCTION dept(text) RETURNS dept
LANGUAGE SQL;
</programlisting>
Here the <literal>$1</literal> will be replaced by the first
function argument when the function is invoked.
Here the <literal>$1</literal> references the value of the first
function argument whenever the function is invoked.
</para>
</sect2>