Alena Rybakina <a.rybak...@postgrespro.ru> writes: > I noticed that there is a comment that values with NULL are not > processed there, but in fact this function calls the construct_md_array > function, which > contains a comment that it can handle NULL values.
Right. construct_md_array has a "bool *nulls" argument, but construct_array doesn't --- it passes NULL for that to construct_md_array, which will therefore assume there are no null array elements. regards, tom lane