From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Mon, 8 Sep 2014 02:40:41 +0000 (-0400)
Subject: Documentation fix: sum(float4) returns float4, not float8.
X-Git-Tag: REL9_4_BETA3~55
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b1a7c9e387f77b85aa14eb342f0432fcdb6ddc35;p=postgresql

Documentation fix: sum(float4) returns float4, not float8.

The old claim is from my commit d06ebdb8d3425185d7e641d15e45908658a0177d of
2000-07-17, but it seems to have been a plain old thinko; sum(float4) has
been distinct from sum(float8) since Berkeley days.  Noted by KaiGai Kohei.

While at it, mention the existence of sum(money), which is also of
embarrassingly ancient vintage.
---

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 77920f4706..8fa8d8f435 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -12246,14 +12246,13 @@ NULL baz</literallayout>(3 rows)</entry>
       <entry>
        <type>smallint</type>, <type>int</type>,
        <type>bigint</type>, <type>real</type>, <type>double
-       precision</type>, <type>numeric</type>, or
-       <type>interval</type>
+       precision</type>, <type>numeric</type>,
+       <type>interval</type>, or <type>money</>
       </entry>
       <entry>
        <type>bigint</type> for <type>smallint</type> or
        <type>int</type> arguments, <type>numeric</type> for
-       <type>bigint</type> arguments, <type>double precision</type>
-       for floating-point arguments, otherwise the same as the
+       <type>bigint</type> arguments, otherwise the same as the
        argument data type
       </entry>
       <entry>sum of <replaceable class="parameter">expression</replaceable> across all input values</entry>