>> I found so following error message is not too friendly (mainly because >> this functionality will be new) >> >> postgres=# select dense_rank(3,3,2) within group (order by num desc, odd) >> from test4; >> ERROR: Incorrect number of arguments for hypothetical set function >> LINE 1: select dense_rank(3,3,2) within group (order by num desc, od... >> ^ >>
>> Probably some hint should be there?
Hm, yeah.
Anyone have ideas for better wording for the original error message, or a DETAIL or HINT addition? The key point here is that the number of _hypothetical_ arguments and the number of ordered columns must match, but we don't currently exclude the possibility that a user-defined hypothetical set function might have additional non-hypothetical args.
The first alternative that springs to mind is:
ERROR: Incorrect number of arguments for hypothetical set function
DETAIL: Number of hypothetical arguments (3) must equal number of ordered columns (2)