explain analyze SELECT _article.id AS _article_id, _article.parent_id AS _article_parent_id, _article.path AS _article_path, _article.data AS _article_data, _article.date_creation AS _article_date_creation, _article.date_publishing AS _article_date_publishing, _article.date_modification AS _article_date_modification, _article.reference AS _article_reference, _article.title AS _article_title, _blog.id AS _blog_id, _blog.parent_id AS _blog_parent_id, _blog.path AS _blog_path, _blog.data AS _blog_data, _blog.date_creation AS _blog_date_creation, _blog.date_publishing AS _blog_date_publishing, _blog.date_modification AS _blog_date_modification, _blog.reference AS _blog_reference, _blog.name AS _blog_name, _blog.main_host AS _blog_main_host, _blog.base_host AS _blog_base_host, _blog.description AS _blog_description FROM _article INNER JOIN _blog ON _article.path <@ _blog.path WHERE _article.reference = 760656 OR _article.reference = 3120003 OR _article.reference = 970246; QUERY PLAN ----------------------------------------------------------------------------------------------------------------------------------------------- Nested Loop (cost=280.56..29867503.15 rows=10305058 width=376) (actual time=0.672..0.790 rows=2 loops=1) -> Bitmap Heap Scan on _article (cost=274.73..99088.81 rows=43134 width=140) (actual time=0.178..0.193 rows=2 loops=1) Recheck Cond: ((reference = 760656) OR (reference = 3120003) OR (reference = 970246)) -> BitmapOr (cost=274.73..274.73 rows=43350 width=0) (actual time=0.150..0.150 rows=0 loops=1) -> Bitmap Index Scan on idx_article_reference (cost=0.00..91.58 rows=14450 width=0) (actual time=0.086..0.086 rows=1 loops=1) Index Cond: (reference = 760656) -> Bitmap Index Scan on idx_article_reference (cost=0.00..91.58 rows=14450 width=0) (actual time=0.026..0.026 rows=0 loops=1) Index Cond: (reference = 3120003) -> Bitmap Index Scan on idx_article_reference (cost=0.00..91.58 rows=14450 width=0) (actual time=0.030..0.030 rows=1 loops=1) Index Cond: (reference = 970246) -> Bitmap Heap Scan on _blog (cost=5.84..687.15 rows=239 width=236) (actual time=0.284..0.285 rows=1 loops=2) Recheck Cond: ("outer".path <@ _blog.path) -> Bitmap Index Scan on gist_idx_blog_path (cost=0.00..5.84 rows=239 width=0) (actual time=0.270..0.270 rows=1 loops=2) Index Cond: ("outer".path <@ _blog.path) Total runtime: 0.877 ms(15 rows)-----------------------------explain analyze SELECT _article.id AS _article_id, _article.parent_id AS _article_parent_id, _article.path AS _article_path, _article.data AS _article_data, _article.date_creation AS _article_date_creation, _article.date_publishing AS _article_date_publishing, _article.date_modification AS _article_date_modification, _article.reference AS _article_reference, _article.title AS _article_title, _blog.id AS _blog_id, _blog.parent_id AS _blog_parent_id, _blog.path AS _blog_path, _blog.data AS _blog_data, _blog.date_creation AS _blog_date_creation, _blog.date_publishing AS _blog_date_publishing, _blog.date_modification AS _blog_date_modification, _blog.reference AS _blog_reference, _blog.name AS _blog_name, _blog.main_host AS _blog_main_host, _blog.base_host AS _blog_base_host, _blog.description AS _blog_description FROM _article INNER JOIN _blog ON _article.path <@ _blog.path WHERE _article.reference = 760656 OR _article.reference = 3120003 OR _article.reference = 970246 OR _article.reference = 1694027; QUERY PLAN ----------------------------------------------------------------------------------------------------------------------------------- Nested Loop (cost=5.84..40075017.69 rows=13705674 width=376) (actual time=625.890..41465.791 rows=3 loops=1) -> Seq Scan on _article (cost=0.00..483178.44 rows=57368 width=140) (actual time=625.569..41465.063 rows=3 loops=1) Filter: ((reference = 760656) OR (reference = 3120003) OR (reference = 970246) OR (reference = 1694027)) -> Bitmap Heap Scan on _blog (cost=5.84..687.15 rows=239 width=236) (actual time=0.217..0.219 rows=1 loops=3) Recheck Cond: ("outer".path <@ _blog.path) -> Bitmap Index Scan on gist_idx_blog_path (cost=0.00..5.84 rows=239 width=0) (actual time=0.203..0.203 rows=1 loops=3) Index Cond: ("outer".path <@ _blog.path) Total runtime: 41465.885 ms(8 rows)