Jake Magner <jakemagner90(at)gmail(dot)com> writes:
> I tried without doing an INSERT at all, just running the SELECT queries and
> the result is the same. Nested loop is chosen but is much slower.
FWIW, I just noticed that the comparisons you're using are plain equality
of the arrays. While a GIN array index supports that, it's not exactly
its strong suit: the sort of questions that index type supports well are
more like "which arrays contain value X?". I wonder if it'd be worth
creating btree indexes on the array column.
regards, tom lane