2007/10/18, Merlin Moncure <[EMAIL PROTECTED]>: > On 10/18/07, Pavel Stehule <[EMAIL PROTECTED]> wrote: > > this function can help with array's iteration. > > > > create function generate_iterator(anyarray) > > returns setof integer > > as $$ > > select i > > from generate_series(array_lower($1,1), > > array_upper($1,1)) g(i) > > $$ language sql; > > There was a very similar proposal a little while back (google: > array_to_set). I think I like those names better since you are > returning a set, not an iterator :-). Also, this should be internal > as you suggest (there is an undocumented builtin that already does > this, _pg_expandarray). > I remember. There is only one important difference. What is behave of array_to_set with multidim. array? the name "generate_iterator" is my first idea (it retunrs set but setof indexes). I am sure so there are better names :) Pavel
---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match