explain.depesz.com

PostgreSQL's explain analyze made readable

Result: mWGci

Settings
# exclusive inclusive rows x rows loops node
1. 0.011 15.678 ↓ 9.0 36 1

Append (cost=1.49..21.85 rows=4 width=296) (actual time=0.087..15.678 rows=36 loops=1)

2. 0.006 0.210 ↓ 2.0 4 1

Nested Loop Left Join (cost=1.49..13.80 rows=2 width=296) (actual time=0.086..0.210 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
3. 0.010 0.104 ↓ 2.0 4 1

Nested Loop (cost=1.38..11.15 rows=2 width=88) (actual time=0.058..0.104 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
4. 0.028 0.062 ↑ 1.2 4 1

Bitmap Heap Scan on source_v2.conversations sc (cost=1.32..4.81 rows=5 width=40) (actual time=0.041..0.062 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
5. 0.001 0.034 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=5 width=0) (actual time=0.034..0.034 rows=0 loops=1)

6. 0.018 0.018 ↑ 1.0 4 1

Bitmap Index Scan on conversations_member_guid_idx (cost=0.00..0.66 rows=4 width=0) (actual time=0.018..0.018 rows=4 loops=1)

  • Index Cond: (sc.member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
7. 0.015 0.015 ↓ 0.0 0 1

Bitmap Index Scan on conversations_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.014..0.015 rows=0 loops=1)

  • Index Cond: (sc.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
8. 0.032 0.032 ↑ 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=0.008..0.008 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)
9. 0.100 0.100 ↑ 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=0.025..0.025 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)
10. 12.914 15.457 ↓ 16.0 32 1

Nested Loop Left Join (cost=1.55..7.99 rows=2 width=296) (actual time=0.342..15.457 rows=32 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. 0.037 2.383 ↓ 16.0 32 1

Nested Loop Left Join (cost=1.43..5.24 rows=2 width=256) (actual time=0.055..2.383 rows=32 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. 0.020 0.042 ↓ 16.0 32 1

Bitmap Heap Scan on source_v2.mutual sm (cost=1.32..2.59 rows=2 width=56) (actual time=0.034..0.042 rows=32 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
13. 0.001 0.022 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=2 width=0) (actual time=0.021..0.022 rows=0 loops=1)

14. 0.011 0.011 ↓ 29.0 29 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=29 loops=1)

  • Index Cond: (sm.member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
15. 0.010 0.010 ↓ 3.0 3 1

Bitmap Index Scan on mutual_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.010..0.010 rows=3 loops=1)

  • Index Cond: (sm.other_member_guid = '15138b8a-5420-7361-1e40-332888f8a382'::uuid)
16. 2.304 2.304 ↑ 1.0 1 32

Index Scan using member_profiles_pk on source.member_profiles mp_1 (cost=0.11..1.32 rows=1 width=216) (actual time=0.072..0.072 rows=1 loops=32)

  • 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)
17. 0.160 0.160 ↑ 1.0 1 32

Index Scan using member_profiles_pk on source.member_profiles mp2 (cost=0.11..1.32 rows=1 width=32) (actual time=0.005..0.005 rows=1 loops=32)

  • 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)
Planning time : 1.001 ms