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Clarify documentation of age() functions.

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This commit is contained in:
Tom Lane 2004-12-01 19:32:12 +00:00
parent 5374d097de
commit 4828445d3c
1 changed files with 10 additions and 9 deletions
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19
doc/src/sgml/func.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.224 2004/11/27 21:27:06 petere Exp $
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.225 2004/12/01 19:32:12 tgl Exp $
PostgreSQL documentation
-->
@ -4877,19 +4877,20 @@ substring('foobar' from 'o(.)b') <lineannotation>o</lineannotation>
<tbody>
<row>
<entry><literal><function>age</function>(<type>timestamp</type>)</literal></entry>
<entry><literal><function>age</function>(<type>timestamp</type>, <type>timestamp</type>)</literal></entry>
<entry><type>interval</type></entry>
<entry>Subtract from today</entry>
<entry><literal>age(timestamp '1957-06-13')</literal></entry>
<entry><literal>43 years 8 mons 3 days</literal></entry>
<entry>Subtract arguments, producing a <quote>symbolic</> result that
uses years and months</entry>
<entry><literal>age(timestamp '2001-04-10', timestamp '1957-06-13')</literal></entry>
<entry><literal>43 years 9 mons 27 days</literal></entry>
</row>
<row>
<entry><literal><function>age</function>(<type>timestamp</type>, <type>timestamp</type>)</literal></entry>
<entry><literal><function>age</function>(<type>timestamp</type>)</literal></entry>
<entry><type>interval</type></entry>
<entry>Subtract arguments</entry>
<entry><literal>age('2001-04-10', timestamp '1957-06-13')</literal></entry>
<entry><literal>43 years 9 mons 27 days</literal></entry>
<entry>Subtract from <function>current_date</function></entry>
<entry><literal>age(timestamp '1957-06-13')</literal></entry>
<entry><literal>43 years 8 mons 3 days</literal></entry>
</row>
<row>