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Commitb640d23

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Documentation fix: sum(float4) returns float4, not float8.
The old claim is from my commitd06ebdb of2000-07-17, but it seems to have been a plain old thinko; sum(float4) hasbeen distinct from sum(float8) since Berkeley days. Noted by KaiGai Kohei.While at it, mention the existence of sum(money), which is also ofembarrassingly ancient vintage.
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‎doc/src/sgml/func.sgml

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@@ -11642,14 +11642,13 @@ SELECT NULLIF(value, '(none)') ...
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<entry>
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<type>smallint</type>, <type>int</type>,
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<type>bigint</type>, <type>real</type>, <type>double
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precision</type>, <type>numeric</type>, or
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<type>interval</type>
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precision</type>, <type>numeric</type>,
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<type>interval</type>, or <type>money</>
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</entry>
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<entry>
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<type>bigint</type> for <type>smallint</type> or
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<type>int</type> arguments, <type>numeric</type> for
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<type>bigint</type> arguments, <type>double precision</type>
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for floating-point arguments, otherwise the same as the
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<type>bigint</type> arguments, otherwise the same as the
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argument data type
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</entry>
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<entry>sum of <replaceable class="parameter">expression</replaceable> across all input values</entry>

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