explain.depesz.com

PostgreSQL's explain analyze made readable

Result: L2yI

Settings
# exclusive inclusive rows x rows loops node
1. 0.008 2.978 ↓ 4.4 31 1

Append (cost=1.50..38.14 rows=7 width=272) (actual time=0.171..2.978 rows=31 loops=1)

  • Buffers: shared hit=488
2. 0.010 0.835 ↓ 1.8 9 1

Nested Loop Left Join (cost=1.50..30.04 rows=5 width=272) (actual time=0.170..0.835 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.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=84
3. 0.020 0.384 ↓ 1.8 9 1

Nested Loop (cost=1.39..23.41 rows=5 width=64) (actual time=0.105..0.384 rows=9 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=39
4. 0.084 0.154 ↑ 1.1 10 1

Bitmap Heap Scan on source_v2.conversations sc (cost=1.33..9.47 rows=11 width=40) (actual time=0.084..0.154 rows=10 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 = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid) OR (sc.other_member_guid = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid))
  • Heap Blocks: exact=6
  • Buffers: shared hit=10
5. 0.001 0.070 ↓ 0.0 0 1

BitmapOr (cost=1.33..1.33 rows=11 width=0) (actual time=0.070..0.070 rows=0 loops=1)

  • Buffers: shared hit=4
6. 0.047 0.047 ↑ 1.0 10 1

Bitmap Index Scan on conversations_member_guid_idx (cost=0.00..0.67 rows=10 width=0) (actual time=0.047..0.047 rows=10 loops=1)

  • Index Cond: (sc.member_guid = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid)
  • Buffers: shared hit=2
7. 0.022 0.022 ↑ 1.0 1 1

Bitmap Index Scan on conversations_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.021..0.022 rows=1 loops=1)

  • Index Cond: (sc.other_member_guid = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid)
  • Buffers: shared hit=2
8. 0.210 0.210 ↑ 1.0 1 10

Index Scan using conversations_pk on projection_v2.conversations pc (cost=0.06..1.27 rows=1 width=40) (actual time=0.021..0.021 rows=1 loops=10)

  • 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=29
9. 0.441 0.441 ↑ 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=0.049..0.049 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 ('3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid IS DISTINCT FROM sc.member_guid) THEN sc.member_guid ELSE sc.other_member_guid END)
  • Buffers: shared hit=45
10. 1.216 2.135 ↓ 11.0 22 1

Nested Loop Left Join (cost=1.55..7.99 rows=2 width=272) (actual time=0.561..2.135 rows=22 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=404
11. 0.037 0.765 ↓ 11.0 22 1

Nested Loop Left Join (cost=1.43..5.24 rows=2 width=256) (actual time=0.182..0.765 rows=22 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=118
12. 0.054 0.156 ↓ 11.0 22 1

Bitmap Heap Scan on source_v2.mutual sm (cost=1.32..2.59 rows=2 width=56) (actual time=0.109..0.156 rows=22 loops=1)

  • Output: sm.mutual_id, sm.member_guid, sm.other_member_guid, sm.inserted_tstamp, sm.created_tstamp
  • Recheck Cond: ((sm.member_guid = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid) OR (sm.other_member_guid = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid))
  • Heap Blocks: exact=4
  • Buffers: shared hit=8
13. 0.001 0.102 ↓ 0.0 0 1

BitmapOr (cost=1.32..1.32 rows=2 width=0) (actual time=0.102..0.102 rows=0 loops=1)

  • Buffers: shared hit=4
14. 0.066 0.066 ↓ 13.0 13 1

Bitmap Index Scan on mutual_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.066..0.066 rows=13 loops=1)

  • Index Cond: (sm.member_guid = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid)
  • Buffers: shared hit=2
15. 0.035 0.035 ↓ 10.0 10 1

Bitmap Index Scan on mutual_other_member_guid_idx (cost=0.00..0.66 rows=1 width=0) (actual time=0.035..0.035 rows=10 loops=1)

  • Index Cond: (sm.other_member_guid = '3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid)
  • Buffers: shared hit=2
16. 0.572 0.572 ↑ 1.0 1 22

Index Scan using member_profiles_pk on source.member_profiles mp_1 (cost=0.11..1.32 rows=1 width=216) (actual time=0.026..0.026 rows=1 loops=22)

  • 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 ('3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.member_guid ELSE sm.other_member_guid END)
  • Buffers: shared hit=110
17. 0.154 0.154 ↑ 1.0 1 22

Index Scan using member_profiles_pk on source.member_profiles mp2 (cost=0.11..1.32 rows=1 width=32) (actual time=0.007..0.007 rows=1 loops=22)

  • Output: mp2.member_deleted_tstamp, mp2.member_ghosted_tstamp, mp2.member_guid
  • Index Cond: (mp2.member_guid = CASE WHEN ('3c6c4c46-a027-25b0-d4ee-8b9a773fa425'::uuid IS DISTINCT FROM sm.member_guid) THEN sm.other_member_guid ELSE sm.member_guid END)
  • Buffers: shared hit=110
Planning time : 1.034 ms