2013/3/21 Brendan Jurd <dire...@gmail.com>: > On 21 March 2013 17:32, Pavel Stehule <pavel.steh...@gmail.com> wrote: >> If I though about it more, I like to more limit one parametric >> array_length function just for only 1D array. So it is your A use >> case. But I understand so this variant is not orthogonal. Hard to say, >> what is better. >> > > Yes, for me (a) is running a very close 2nd place to (c). The > strength of (a) is it means we aren't making guesses about the user's > intention. When a user concocts an expression that is ambiguous, I > feel it is usually good to kick it back to them and ask them to be > more precise. > > On the other hand, I find it very natural to interpret "what is the > length of my multidim array" to mean "what is the length of the > outermost dimension of my multidim array", because to me a multidim > array is just an array that contains more arrays.
lot of postgresql functions calculate with all items in array without respect to dimensions - like unnest. so concept "use outermost dim" is not in pg now, and should not be introduced if it is possible. More it goes against a verbosity concept introduced by ADA and reused in PL/SQL and PL/pgSQL. regards Pavel > > Cheers, > BJ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
