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Incorporate examples and doc patches from Mark Kirkwood and David Fetter.

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This commit is contained in:
Tom Lane
2005-01-14 01:16:52 +00:00
parent 29e58330a6
commit a294726bc1
3 changed files with 203 additions and 5 deletions
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13
doc/src/sgml/ref/alter_table.sgml
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@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.76 2005/01/10 00:04:43 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.77 2005/01/14 01:16:52 tgl Exp $
PostgreSQL documentation
-->
@@ -537,6 +537,17 @@ ALTER TABLE distributors
</programlisting>
</para>
<para>
To change an integer column containing UNIX timestamps to <type>timestamp
with time zone</type> via a <literal>USING</literal> clause:
<programlisting>
ALTER TABLE foo
ALTER COLUMN foo_timestamp TYPE timestamp with time zone
USING
timestamp with time zone 'epoch' + foo_timestamp * interval '1 second';
</programlisting>
</para>
<para>
To rename an existing column:
<programlisting>

12
doc/src/sgml/ref/create_opclass.sgml
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@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/create_opclass.sgml,v 1.12 2003/11/29 19:51:38 pgsql Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/create_opclass.sgml,v 1.13 2005/01/14 01:16:52 tgl Exp $
PostgreSQL documentation
-->
@@ -205,6 +205,16 @@ CREATE OPERATOR CLASS <replaceable class="parameter">name</replaceable> [ DEFAUL
</para>
</refsect1>
<refsect1>
<title>Notes</title>
<para>
The operators should not be defined by SQL functions. A SQL function
is likely to be inlined into the calling query, which will prevent
the optimizer from recognizing that the query matches an index.
</para>
</refsect1>
<refsect1>
<title>Examples</title>