candidate missing indices (first one will replace bugtask__product__heat__idx)
CREATE INDEX bugtask__product__heat__id__idx ON bugtask USING btree (product, heat desc, id) WHERE product IS NOT NULL;
CREATE INDEX bugtask__distribution__head__id__idx ON bugtask USING btree(distribution, heat desc, id) WHERE bugtask IS NOT NULL;
candidate missing indices (first one will replace bugtask_ _product_ _heat__ idx)
CREATE INDEX bugtask_ _product_ _heat__ id__idx ON bugtask USING btree (product, heat desc, id) WHERE product IS NOT NULL; _distribution_ _head__ id__idx ON bugtask USING btree(distribution, heat desc, id) WHERE bugtask IS NOT NULL;
CREATE INDEX bugtask_