"David E. Wheeler" <da...@kineticode.com> writes:
> Well, I'd just point out that the return value of string_to_array() is
> text[].
True...
> Thus, this is not a problem with string_to_array(), but a
> casting problem from text[] to int[].
Nonsense. The question is whether string_to_array is meant to be useful
for lists of anything except text. I agree you could argue that it
isn't. But even in the domain of text it's not all that cut-and-dried
whether string_to_array should return array[] or array[''] for empty
input. So ISTM we're giving up less than we gain by choosing the former.
regards, tom lane
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