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Add ceiling() as an alias for ceil(), and power() as an alias for pow().

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Regression tests and documentation have both been updated.

SQL2003 requires that both ceiling() and ceil() be present, so I have
documented both spellings. SQL2003 doesn't mention pow() as far as I
can see, so I decided to replace pow() with power() in the documentation:
there is little reason to encourage the continued usage of a function
that isn't compliant with the standard, given a standard-compliant
alternative.

RELEASE NOTES: should state that pow() is considered deprecated
(although I don't see the need to ever remove it.)
This commit is contained in:
Neil Conway
2004-04-23 20:32:20 +00:00
parent 7a66015e98
commit fc7fd50182
10 changed files with 139 additions and 17 deletions
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18
doc/src/sgml/func.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.197 2004/04/10 18:02:59 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.198 2004/04/23 20:32:19 neilc Exp $
PostgreSQL documentation
-->
@ -587,6 +587,14 @@ PostgreSQL documentation
<entry><literal>-42</literal></entry>
</row>
<row>
<entry><literal><function>ceiling</function>(<type>dp</type> or <type>numeric</type>)</literal></entry>
<entry>(same as input)</entry>
<entry>smallest integer not less than argument (alias for <function>ceil</function>)</entry>
<entry><literal>ceiling(-95.3)</literal></entry>
<entry><literal>-95</literal></entry>
</row>
<row>
<entry><literal><function>degrees</function>(<type>dp</type>)</literal></entry>
<entry><type>dp</type></entry>
@ -654,20 +662,20 @@ PostgreSQL documentation
</row>
<row>
<entry><literal><function>pow</function>(<parameter>a</parameter> <type>dp</type>,
<entry><literal><function>power</function>(<parameter>a</parameter> <type>dp</type>,
<parameter>b</parameter> <type>dp</type>)</literal></entry>
<entry><type>dp</type></entry>
<entry><parameter>a</> raised to the power of <parameter>b</parameter></entry>
<entry><literal>pow(9.0, 3.0)</literal></entry>
<entry><literal>power(9.0, 3.0)</literal></entry>
<entry><literal>729</literal></entry>
</row>
<row>
<entry><literal><function>pow</function>(<parameter>a</parameter> <type>numeric</type>,
<entry><literal><function>power</function>(<parameter>a</parameter> <type>numeric</type>,
<parameter>b</parameter> <type>numeric</type>)</literal></entry>
<entry><type>numeric</type></entry>
<entry><parameter>a</> raised to the power of <parameter>b</parameter></entry>
<entry><literal>pow(9.0, 3.0)</literal></entry>
<entry><literal>power(9.0, 3.0)</literal></entry>
<entry><literal>729</literal></entry>
</row>