explain.depesz.com

PostgreSQL's explain analyze made readable

Result: ZAvb

Settings
# exclusive inclusive rows x rows loops node
1. 0.007 2.138 ↓ 5.3 32 1

Append (cost=1.50..39.33 rows=6 width=296) (actual time=0.111..2.138 rows=32 loops=1)

2. 0.017 0.438 ↓ 2.2 9 1

Nested Loop Left Join (cost=1.50..28.71 rows=4 width=296) (actual time=0.110..0.438 rows=9 loops=1)

  • Output: sc.member_guid, sc.other_member_guid, NULL::bigint, NULL::timestamp with time zone, NULL::timestamp with time zone, 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.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
3. 0.020 0.205 ↓ 2.2 9 1

Nested Loop (cost=1.39..23.41 rows=4 width=88) (actual time=0.074..0.205 rows=9 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.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
4. 0.056 0.097 ↑ 1.0 11 1

Bitmap Heap Scan on source_v2.conversations sc (cost=1.33..9.47 rows=11 width=40) (actual time=0.052..0.097 rows=11 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 = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid) OR (sc.other_member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid))
  • Heap Blocks: exact=9
5. 0.006 0.041 ↓ 0.0 0 1

BitmapOr (cost=1.33..1.33 rows=11 width=0) (actual time=0.041..0.041 rows=0 loops=1)

6. 0.025 0.025 ↑ 1.0 6 1

Bitmap Index Scan on conversations_member_guid_idx (cost=0.00..0.67 rows=6 width=0) (actual time=0.025..0.025 rows=6 loops=1)

  • Index Cond: (sc.member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid)
7. 0.010 0.010 ↑ 1.0 5 1

Bitmap Index Scan on conversations_other_member_guid_idx (cost=0.00..0.66 rows=5 width=0) (actual time=0.010..0.010 rows=5 loops=1)

  • Index Cond: (sc.other_member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid)
8. 0.088 0.088 ↑ 1.0 1 11

Index Scan using conversations_pk on projection_v2.conversations pc (cost=0.06..1.27 rows=1 width=56) (actual time=0.008..0.008 rows=1 loops=11)

  • 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)
9. 0.216 0.216 ↑ 1.0 1 9

Index Scan using member_profiles_pk on source.member_profiles mp (cost=0.11..1.32 rows=1 width=200) (actual time=0.024..0.024 rows=1 loops=9)

  • 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 ('66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid IS DISTINCT FROM sc.member_guid) THEN sc.member_guid ELSE sc.other_member_guid END)
10. 1.153 1.693 ↓ 11.5 23 1

Nested Loop Left Join (cost=1.55..10.53 rows=2 width=296) (actual time=0.481..1.693 rows=23 loops=1)

  • Output: sm.member_guid, sm.other_member_guid, sm.mutual_id, sm.inserted_tstamp, sm.created_tstamp, NULL::bigint, NULL::bigint, NULL::bigint, 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
11. 0.015 0.448 ↓ 11.5 23 1

Nested Loop Left Join (cost=1.43..7.78 rows=2 width=256) (actual time=0.075..0.448 rows=23 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
12. 0.036 0.134 ↓ 11.5 23 1

Bitmap Heap Scan on source_v2.mutual sm (cost=1.32..5.13 rows=2 width=56) (actual time=0.040..0.134 rows=23 loops=1)

  • Output: sm.mutual_id, sm.member_guid, sm.other_member_guid, sm.inserted_tstamp, sm.created_tstamp
  • Recheck Cond: ((sm.member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid) OR (sm.other_member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid))
  • Filter: ((sm.member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid) OR ((sm.other_member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid) AND (NOT (alternatives: SubPlan 1 or hashed SubPlan 2))))
  • Rows Removed by Filter: 1
  • Heap Blocks: exact=3
13. 0.001 0.033 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=2 width=0) (actual time=0.033..0.033 rows=0 loops=1)

14. 0.022 0.022 ↓ 30.0 30 1

Bitmap Index Scan on mutual_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.022..0.022 rows=30 loops=1)

  • Index Cond: (sm.member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid)
15. 0.010 0.010 ↓ 19.0 19 1

Bitmap Index Scan on mutual_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.010..0.010 rows=19 loops=1)

  • Index Cond: (sm.other_member_guid = '66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid)
16.          

SubPlan (for Bitmap Heap Scan)

17. 0.065 0.065 ↓ 0.0 0 13

Index Scan using conversations_other_member_guid_idx on source_v2.conversations sc_1 (cost=0.06..1.27 rows=1 width=0) (actual time=0.005..0.005 rows=0 loops=13)

  • Index Cond: (sc_1.other_member_guid = sm.other_member_guid)
  • Filter: (sc_1.member_guid = sm.member_guid)
  • Rows Removed by Filter: 5
18. 0.000 0.000 ↓ 0.0 0

Seq Scan on source_v2.conversations sc_2 (cost=0.00..134.36 rows=2,936 width=32) (never executed)

  • Output: sc_2.member_guid, sc_2.other_member_guid
19. 0.299 0.299 ↑ 1.0 1 23

Index Scan using member_profiles_pk on source.member_profiles mp_1 (cost=0.11..1.32 rows=1 width=216) (actual time=0.013..0.013 rows=1 loops=23)

  • 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 ('66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.member_guid ELSE sm.other_member_guid END)
20. 0.092 0.092 ↑ 1.0 1 23

Index Scan using member_profiles_pk on source.member_profiles mp2 (cost=0.11..1.32 rows=1 width=32) (actual time=0.004..0.004 rows=1 loops=23)

  • Output: mp2.member_deleted_tstamp, mp2.member_ghosted_tstamp, mp2.member_guid
  • Index Cond: (mp2.member_guid = CASE WHEN ('66964ee7-4dca-55ab-9431-450b2e74b9ca'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.other_member_guid ELSE sm.member_guid END)
Planning time : 1.097 ms