<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>