explain.depesz.com

PostgreSQL's explain analyze made readable

Result: 5aE7

Settings
# exclusive inclusive rows x rows loops node
1. 0.015 8.679 ↓ 12.5 50 1

Append (cost=1.49..21.85 rows=4 width=272) (actual time=0.211..8.679 rows=50 loops=1)

  • Buffers: shared hit=902
2. 0.006 0.693 ↓ 2.0 4 1

Nested Loop Left Join (cost=1.49..13.80 rows=2 width=272) (actual time=0.210..0.693 rows=4 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=39
3. 0.010 0.363 ↓ 2.0 4 1

Nested Loop (cost=1.38..11.15 rows=2 width=64) (actual time=0.122..0.363 rows=4 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=19
4. 0.218 0.289 ↑ 1.2 4 1

Bitmap Heap Scan on source_v2.conversations sc (cost=1.32..4.81 rows=5 width=40) (actual time=0.091..0.289 rows=4 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 = '15138b8a-5420-7361-1e40-332888f8a382'::uuid) OR (sc.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid))
  • Heap Blocks: exact=3
  • Buffers: shared hit=7
5. 0.002 0.071 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=5 width=0) (actual time=0.071..0.071 rows=0 loops=1)

  • Buffers: shared hit=4
6. 0.038 0.038 ↑ 1.0 4 1

Bitmap Index Scan on conversations_member_guid_idx (cost=0.00..0.66 rows=4 width=0) (actual time=0.038..0.038 rows=4 loops=1)

  • Index Cond: (sc.member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
7. 0.031 0.031 ↓ 0.0 0 1

Bitmap Index Scan on conversations_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.031..0.031 rows=0 loops=1)

  • Index Cond: (sc.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
8. 0.064 0.064 ↑ 1.0 1 4

Index Scan using conversations_pk on projection_v2.conversations pc (cost=0.06..1.27 rows=1 width=40) (actual time=0.016..0.016 rows=1 loops=4)

  • 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=12
9. 0.324 0.324 ↑ 1.0 1 4

Index Scan using member_profiles_pk on source.member_profiles mp (cost=0.11..1.32 rows=1 width=200) (actual time=0.081..0.081 rows=1 loops=4)

  • 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 ('15138b8a-5420-7361-1e40-332888f8a382'::uuid IS DISTINCT FROM sc.member_guid) THEN sc.member_guid ELSE sc.other_member_guid END)
  • Buffers: shared hit=20
10. 4.906 7.971 ↓ 23.0 46 1

Nested Loop Left Join (cost=1.55..7.99 rows=2 width=272) (actual time=1.351..7.971 rows=46 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=863
11. 0.091 2.697 ↓ 23.0 46 1

Nested Loop Left Join (cost=1.43..5.24 rows=2 width=256) (actual time=0.195..2.697 rows=46 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=235
12. 0.024 0.122 ↓ 23.0 46 1

Bitmap Heap Scan on source_v2.mutual sm (cost=1.32..2.59 rows=2 width=56) (actual time=0.112..0.122 rows=46 loops=1)

  • Output: sm.mutual_id, sm.member_guid, sm.other_member_guid, sm.inserted_tstamp, sm.created_tstamp
  • Recheck Cond: ((sm.member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid) OR (sm.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid))
  • Heap Blocks: exact=1
  • Buffers: shared hit=5
13. 0.001 0.098 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=2 width=0) (actual time=0.098..0.098 rows=0 loops=1)

  • Buffers: shared hit=4
14. 0.055 0.055 ↓ 43.0 43 1

Bitmap Index Scan on mutual_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.055..0.055 rows=43 loops=1)

  • Index Cond: (sm.member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
15. 0.042 0.042 ↓ 3.0 3 1

Bitmap Index Scan on mutual_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.042..0.042 rows=3 loops=1)

  • Index Cond: (sm.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
16. 2.484 2.484 ↑ 1.0 1 46

Index Scan using member_profiles_pk on source.member_profiles mp_1 (cost=0.11..1.32 rows=1 width=216) (actual time=0.054..0.054 rows=1 loops=46)

  • 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 ('15138b8a-5420-7361-1e40-332888f8a382'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.member_guid ELSE sm.other_member_guid END)
  • Buffers: shared hit=230
17. 0.368 0.368 ↑ 1.0 1 46

Index Scan using member_profiles_pk on source.member_profiles mp2 (cost=0.11..1.32 rows=1 width=32) (actual time=0.008..0.008 rows=1 loops=46)

  • Output: mp2.member_deleted_tstamp, mp2.member_ghosted_tstamp, mp2.member_guid
  • Index Cond: (mp2.member_guid = CASE WHEN ('15138b8a-5420-7361-1e40-332888f8a382'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.other_member_guid ELSE sm.member_guid END)
  • Buffers: shared hit=230
Planning time : 2.825 ms