Re: ANY_VALUE aggregate

On 05.12.22 21:18, Vik Fearing wrote:
> On 12/5/22 15:57, Vik Fearing wrote:
>> The SQL:2023 Standard defines a new aggregate named ANY_VALUE.  It
>> returns an implementation-dependent (i.e. non-deterministic) value
>> from the rows in its group.
>>
>> PFA an implementation of this aggregate.
>
> Here is v2 of this patch.  I had forgotten to update sql_features.txt.

In your patch, the documentation says the definition is any_value("any")
but the catalog definitions are any_value(anyelement). Please sort that
out.

Since the transition function is declared strict, null values don't need
to be checked. I think the whole function could be reduced to

Datum
any_value_trans(PG_FUNCTION_ARGS)
{
PG_RETURN_DATUM(PG_GETARG_DATUM(0));
}