explain.depesz.com

PostgreSQL's explain analyze made readable

Result: x3wc

Settings
# exclusive inclusive rows x rows loops node
1. 0.004 1.460 ↓ 6.3 19 1

Append (cost=1.48..14.55 rows=3 width=272) (actual time=0.224..1.460 rows=19 loops=1)

  • Buffers: shared hit=342 dirtied=1
2. 0.004 0.225 ↑ 1.0 1 1

Nested Loop Left Join (cost=1.48..6.51 rows=1 width=272) (actual time=0.224..0.225 rows=1 loops=1)

  • Output: sc.member_guid, sc.other_member_guid, NULL::bigint, NULL::timestamp with time zone, NULL::timestamp with time zone, pc.member_latest_message_sent_tstamp, pc.other_member_latest_message_sent_tstamp, pc.conversation_depth, pc.is_either_member_blocked, pc.is_member_latest_message_sender, pc.member_has_new_message, pc.other_member_has_new_message, pc.is_conversation_removed_by_member, pc.is_conversation_removed_by_other_member, pc.is_member_deleted, pc.is_member_ghosted, pc.is_other_member_deleted, pc.is_other_member_ghosted, pc.member_has_priority_message, pc.other_member_has_priority_message, pc.latest_message_type_id, mp.gender_identity_type, mp.first_name, mp.home_city_name, mp.main_image_thumbnail_url, mp.last_activity_tstamp, mp.date_of_birth, mp.legacy_profile_id, mp.is_upgraded, mp.username, mp.headline, mp.show_firstname, mp.seeking_gender
  • Inner Unique: true
  • Buffers: shared hit=13 dirtied=1
3. 0.007 0.142 ↑ 1.0 1 1

Nested Loop (cost=1.37..5.18 rows=1 width=64) (actual time=0.142..0.142 rows=1 loops=1)

  • Output: pc.member_latest_message_sent_tstamp, pc.other_member_latest_message_sent_tstamp, pc.conversation_depth, pc.is_either_member_blocked, pc.is_member_latest_message_sender, pc.member_has_new_message, pc.other_member_has_new_message, pc.is_conversation_removed_by_member, pc.is_conversation_removed_by_other_member, pc.is_member_deleted, pc.is_member_ghosted, pc.is_other_member_deleted, pc.is_other_member_ghosted, pc.member_has_priority_message, pc.other_member_has_priority_message, pc.latest_message_type_id, sc.member_guid, sc.other_member_guid
  • Inner Unique: true
  • Buffers: shared hit=8
4. 0.005 0.115 ↑ 2.0 1 1

Bitmap Heap Scan on source_v2.conversations sc (cost=1.32..2.65 rows=2 width=40) (actual time=0.115..0.115 rows=1 loops=1)

  • Output: sc.conversation_id, sc.member_guid, sc.other_member_guid, sc.member_removed_tstamp, sc.other_member_removed_tstamp, sc.member_read_tstamp, sc.other_member_read_tstamp, sc.inserted_tstamp
  • Recheck Cond: ((sc.member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid) OR (sc.other_member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid))
  • Heap Blocks: exact=1
  • Buffers: shared hit=5
5. 0.001 0.110 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=2 width=0) (actual time=0.110..0.110 rows=0 loops=1)

  • Buffers: shared hit=4
6. 0.091 0.091 ↑ 1.0 1 1

Bitmap Index Scan on conversations_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.091..0.091 rows=1 loops=1)

  • Index Cond: (sc.member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid)
  • Buffers: shared hit=2
7. 0.018 0.018 ↓ 0.0 0 1

Bitmap Index Scan on conversations_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.018..0.018 rows=0 loops=1)

  • Index Cond: (sc.other_member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid)
  • Buffers: shared hit=2
8. 0.020 0.020 ↑ 1.0 1 1

Index Scan using conversations_pk on projection_v2.conversations pc (cost=0.06..1.27 rows=1 width=40) (actual time=0.020..0.020 rows=1 loops=1)

  • Output: pc.conversation_id, pc.member_conversation_legacy_id, pc.other_member_conversation_legacy_id, pc.member_latest_message_sent_tstamp, pc.other_member_latest_message_sent_tstamp, pc.latest_message_type_id, pc.conversation_depth, pc.is_either_member_blocked, pc.is_member_latest_message_sender, pc.member_has_new_message, pc.other_member_has_new_message, pc.is_conversation_removed_by_member, pc.is_conversation_removed_by_other_member, pc.is_member_deleted, pc.is_member_ghosted, pc.is_other_member_deleted, pc.is_other_member_ghosted, pc.member_has_priority_message, pc.other_member_has_priority_message
  • Index Cond: (pc.conversation_id = sc.conversation_id)
  • Buffers: shared hit=3
9. 0.079 0.079 ↑ 1.0 1 1

Index Scan using member_profiles_pk on source.member_profiles mp (cost=0.11..1.32 rows=1 width=200) (actual time=0.079..0.079 rows=1 loops=1)

  • Output: mp.gender_identity_type, mp.first_name, mp.home_city_name, mp.main_image_thumbnail_url, mp.last_activity_tstamp, mp.date_of_birth, mp.legacy_profile_id, mp.is_upgraded, mp.username, mp.headline, mp.show_firstname, mp.seeking_gender, mp.member_guid
  • Index Cond: (mp.member_guid = CASE WHEN ('45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid IS DISTINCT FROM sc.member_guid) THEN sc.member_guid ELSE sc.other_member_guid END)
  • Buffers: shared hit=5 dirtied=1
10. 0.839 1.231 ↓ 9.0 18 1

Nested Loop Left Join (cost=1.55..7.99 rows=2 width=272) (actual time=0.351..1.231 rows=18 loops=1)

  • Output: sm.member_guid, sm.other_member_guid, sm.mutual_id, sm.inserted_tstamp, sm.created_tstamp, NULL::timestamp with time zone, NULL::timestamp with time zone, NULL::smallint, source.calculate_is_either_member_blocked(sm.member_guid, sm.other_member_guid), NULL::boolean, NULL::boolean, NULL::boolean, NULL::boolean, NULL::boolean, (mp2.member_deleted_tstamp IS NOT NULL), (mp2.member_ghosted_tstamp IS NOT NULL), (mp_1.member_deleted_tstamp IS NOT NULL), (mp_1.member_ghosted_tstamp IS NOT NULL), NULL::boolean, NULL::boolean, NULL::smallint, mp_1.gender_identity_type, mp_1.first_name, mp_1.home_city_name, mp_1.main_image_thumbnail_url, mp_1.last_activity_tstamp, mp_1.date_of_birth, mp_1.legacy_profile_id, mp_1.is_upgraded, mp_1.username, mp_1.headline, mp_1.show_firstname, mp_1.seeking_gender
  • Inner Unique: true
  • Buffers: shared hit=329
11. 0.014 0.284 ↓ 9.0 18 1

Nested Loop Left Join (cost=1.43..5.24 rows=2 width=256) (actual time=0.066..0.284 rows=18 loops=1)

  • Output: sm.member_guid, sm.other_member_guid, sm.mutual_id, sm.inserted_tstamp, sm.created_tstamp, mp_1.member_deleted_tstamp, mp_1.member_ghosted_tstamp, mp_1.gender_identity_type, mp_1.first_name, mp_1.home_city_name, mp_1.main_image_thumbnail_url, mp_1.last_activity_tstamp, mp_1.date_of_birth, mp_1.legacy_profile_id, mp_1.is_upgraded, mp_1.username, mp_1.headline, mp_1.show_firstname, mp_1.seeking_gender
  • Inner Unique: true
  • Buffers: shared hit=95
12. 0.007 0.054 ↓ 9.0 18 1

Bitmap Heap Scan on source_v2.mutual sm (cost=1.32..2.59 rows=2 width=56) (actual time=0.051..0.054 rows=18 loops=1)

  • Output: sm.mutual_id, sm.member_guid, sm.other_member_guid, sm.inserted_tstamp, sm.created_tstamp
  • Recheck Cond: ((sm.member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid) OR (sm.other_member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid))
  • Heap Blocks: exact=1
  • Buffers: shared hit=5
13. 0.001 0.047 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=2 width=0) (actual time=0.047..0.047 rows=0 loops=1)

  • Buffers: shared hit=4
14. 0.029 0.029 ↓ 8.0 8 1

Bitmap Index Scan on mutual_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.029..0.029 rows=8 loops=1)

  • Index Cond: (sm.member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid)
  • Buffers: shared hit=2
15. 0.017 0.017 ↓ 10.0 10 1

Bitmap Index Scan on mutual_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.017..0.017 rows=10 loops=1)

  • Index Cond: (sm.other_member_guid = '45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid)
  • Buffers: shared hit=2
16. 0.216 0.216 ↑ 1.0 1 18

Index Scan using member_profiles_pk on source.member_profiles mp_1 (cost=0.11..1.32 rows=1 width=216) (actual time=0.012..0.012 rows=1 loops=18)

  • Output: mp_1.member_deleted_tstamp, mp_1.member_ghosted_tstamp, mp_1.gender_identity_type, mp_1.first_name, mp_1.home_city_name, mp_1.main_image_thumbnail_url, mp_1.last_activity_tstamp, mp_1.date_of_birth, mp_1.legacy_profile_id, mp_1.is_upgraded, mp_1.username, mp_1.headline, mp_1.show_firstname, mp_1.seeking_gender, mp_1.member_guid
  • Index Cond: (mp_1.member_guid = CASE WHEN ('45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.member_guid ELSE sm.other_member_guid END)
  • Buffers: shared hit=90
17. 0.108 0.108 ↑ 1.0 1 18

Index Scan using member_profiles_pk on source.member_profiles mp2 (cost=0.11..1.32 rows=1 width=32) (actual time=0.006..0.006 rows=1 loops=18)

  • Output: mp2.member_deleted_tstamp, mp2.member_ghosted_tstamp, mp2.member_guid
  • Index Cond: (mp2.member_guid = CASE WHEN ('45e36740-9a9b-9b68-a4d0-f648f41be59a'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.other_member_guid ELSE sm.member_guid END)
  • Buffers: shared hit=90
Planning time : 0.906 ms