Dan Weber wrote:
I made an expression index specifically for that where clause: CREATE INDEX special_testing_idx on my_table (((bool_1 or int_1 = 0) AND (int_2 IS NULL) AND (int_3 IS NULL) AND (protocol = 2)));
No, you haven't. What you've done here is create an index *for that expression*. And it's not terribly useful because your expression will only have two possible values: true, false.
What you were after is something like: CREATE INDEX special_idx2 ON my_table (id) WHERE (...long expression...) -- Richard Huxton Archonet Ltd
