jian he <jian(dot)universality(at)gmail(dot)com> writes:
> should I expect the typdelim be a white space? Since '1 2'::int2vector
> works, '1,2'::int2vector does not work.
typdelim applies to the type's associated array type, that is
int2vector[].
regression=# select '{1 2,3 4 5}'::int2vector[];
int2vector
-----------------
{"1 2","3 4 5"}
(1 row)
regards, tom lane