Patric Bechtel <> writes:
> I tried to add bool support to the btree_gin contrib module, and as far as I 
> can tell, it seems to
> work (wasn't that complicated, actually).
> But now I'm stuck, as PostgreSQL doesn't seem to like to use my new index, if 
> I use equality or
> unequality, just with greater and lower than.

I think your problem is that the planner won't apply
match_boolean_index_clause() or expand_boolean_index_clause(),
because it has a hard-wired idea of which index opclasses could
possibly benefit from that, cf IsBooleanOpfamily().

                        regards, tom lane

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