explain.depesz.com

PostgreSQL's explain analyze made readable

Result: 4FYN

Settings
# exclusive inclusive rows x rows loops node
1. 0.011 7.353 ↓ 10.5 42 1

Append (cost=1.49..21.85 rows=4 width=296) (actual time=0.090..7.353 rows=42 loops=1)

  • Buffers: shared hit=721 read=8
  • I/O Timings: read=4.279
2. 0.008 0.197 ↓ 2.0 4 1

Nested Loop Left Join (cost=1.49..13.80 rows=2 width=296) (actual time=0.090..0.197 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.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
  • Buffers: shared hit=39
3. 0.011 0.097 ↓ 2.0 4 1

Nested Loop (cost=1.38..11.15 rows=2 width=88) (actual time=0.054..0.097 rows=4 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
  • Buffers: shared hit=19
4. 0.033 0.058 ↑ 1.2 4 1

Bitmap Heap Scan on source_v2.conversations sc (cost=1.32..4.81 rows=5 width=40) (actual time=0.037..0.058 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. 0.001 0.025 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=5 width=0) (actual time=0.025..0.025 rows=0 loops=1)

  • Buffers: shared hit=4
6. 0.016 0.016 ↑ 1.0 4 1

Bitmap Index Scan on conversations_member_guid_idx (cost=0.00..0.66 rows=4 width=0) (actual time=0.016..0.016 rows=4 loops=1)

  • Index Cond: (sc.member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
7. 0.008 0.008 ↓ 0.0 0 1

Bitmap Index Scan on conversations_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.008..0.008 rows=0 loops=1)

  • Index Cond: (sc.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
8. 0.028 0.028 ↑ 1.0 1 4

Index Scan using conversations_pk on projection_v2.conversations pc (cost=0.06..1.27 rows=1 width=56) (actual time=0.007..0.007 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. 0.092 0.092 ↑ 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=0.023..0.023 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. 5.108 7.145 ↓ 19.0 38 1

Nested Loop Left Join (cost=1.55..7.99 rows=2 width=296) (actual time=0.396..7.145 rows=38 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
  • Buffers: shared hit=682 read=8
  • I/O Timings: read=4.279
11. 0.059 1.885 ↓ 19.0 38 1

Nested Loop Left Join (cost=1.43..5.24 rows=2 width=256) (actual time=0.055..1.885 rows=38 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=193 read=2
  • I/O Timings: read=1.136
12. 0.016 0.040 ↓ 19.0 38 1

Bitmap Heap Scan on source_v2.mutual sm (cost=1.32..2.59 rows=2 width=56) (actual time=0.033..0.040 rows=38 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. 0.000 0.024 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=2 width=0) (actual time=0.024..0.024 rows=0 loops=1)

  • Buffers: shared hit=4
14. 0.011 0.011 ↓ 35.0 35 1

Bitmap Index Scan on mutual_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.011..0.011 rows=35 loops=1)

  • Index Cond: (sm.member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
15. 0.013 0.013 ↓ 3.0 3 1

Bitmap Index Scan on mutual_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.013..0.013 rows=3 loops=1)

  • Index Cond: (sm.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
  • Buffers: shared hit=2
16. 1.786 1.786 ↑ 1.0 1 38

Index Scan using member_profiles_pk on source.member_profiles mp_1 (cost=0.11..1.32 rows=1 width=216) (actual time=0.047..0.047 rows=1 loops=38)

  • 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=188 read=2
  • I/O Timings: read=1.136
17. 0.152 0.152 ↑ 1.0 1 38

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=38)

  • 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=190
Planning time : 1.057 ms