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 2a39c244ee60ee4b8922c078f200f4c2e65d72d4..f44c9cc8768b0687474adb7ddad74d04e25b1d60 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -11090,14 +11090,13 @@ SELECT NULLIF(value, '(none)') ...
       <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>