På torsdag 09. mars 2017 kl. 18:09:45, skrev Robert Haas <robertmh...@gmail.com <mailto:robertmh...@gmail.com>>: On Thu, Mar 9, 2017 at 11:25 AM, Rushabh Lathia <rushabh.lat...@gmail.com> wrote: > I don't see this failure with the patch. Even I forced the gather merge > in the above query and that just working fine. > > Attaching patch, with the discussed changes.
Committed. I'm still getting (as of 9c2635e26f6f4e34b3b606c0fc79d0e111953a74): ERROR: GatherMerge child's targetlist doesn't match GatherMerge from this query: EXPLAIN ANALYSE SELECT em.entity_id FROM origo_email_delivery del JOIN origo_email_message emON (del.message_id = em.entity_id) WHERE 1 = 1 AND del.owner_id =3 AND ( del.from_entity_id = 279519 OR del.from_entity_id = 3 AND em.entity_idIN ( SELECT ea_owner.message_id FROM origo_email_address_owner ea_ownerWHERE ea_owner.recipient_id = 279519 ) ) ORDER BY del.received_timestamp DESCLIMIT 101 OFFSET 0; Is this known or shall I provide more info/schema etc? If I select del.entity_id, it works: EXPLAIN ANALYSE SELECT del.entity_id FROM origo_email_delivery del JOIN origo_email_message emON (del.message_id = em.entity_id) WHERE 1 = 1 AND del.owner_id =3 AND ( del.from_entity_id = 279519 OR del.from_entity_id = 3 AND em.entity_idIN ( SELECT ea_owner.message_id FROM origo_email_address_owner ea_ownerWHERE ea_owner.recipient_id = 279519 ) ) ORDER BY del.received_timestamp DESC LIMIT 101 OFFSET 0; Plan is: │ Limit (cost=1259.72..15798.21 rows=101 width=16) (actual time=152.946..153.269 rows=34 loops=1) │ │ -> Gather Merge (cost=1259.72..3139414.43 rows=21801 width=16) (actual time=152.945..153.264 rows=34 loops=1) │ │ Workers Planned: 4 │ │ Workers Launched: 4 │ │ -> Nested Loop (cost=259.66..3135817.66 rows=5450 width=16) (actual time=95.295..137.549 rows=7 loops=5) │ │ -> Parallel Index Scan Backward using origo_email_received_idx on origo_email_delivery del (cost=0.42..312163.56 rows=10883 width=32) (actual time=0.175..121.434 rows=6540 loops=5) │ │ Filter: ((owner_id = 3) AND ((from_entity_id = 279519) OR (from_entity_id = 3))) │ │ Rows Removed by Filter: 170355 │ │ -> Index Only Scan using origo_email_message_pkey on origo_email_message em (cost=259.24..259.45 rows=1 width=8) (actual time=0.002..0.002 rows=0 loops=32699) │ │ Index Cond: (entity_id = del.message_id) │ │ Filter: ((del.from_entity_id = 279519) OR ((del.from_entity_id = 3) AND (hashed SubPlan 1))) │ │ Rows Removed by Filter: 1 │ │ Heap Fetches: 0 │ │ SubPlan 1 │ │ -> Index Scan using origo_email_address_owner_recipient_id_idx on origo_email_address_owner ea_owner (cost=0.43..258.64 rows=69 width=8) (actual time=0.032..0.294 rows=175 loops=5) │ │ Index Cond: (recipient_id = 279519) │ │ Planning time: 1.372 ms │ │ Execution time: 170.859 ms │ -- Andreas Joseph Krogh
