Add indexes to onboarding_progresses table

For optimizing the groups_for_track queries

changelogs/unreleased/296133-engineering-in-product-email-campaigns-in-saas.yml

+---
+title: Add indexes for onboarding progress table
+merge_request: 50679
+author:
+type: performance

db/migrate/20210114142443_add_indexes_to_onboarding_progresses.rb

+# frozen_string_literal: true
+
+class AddIndexesToOnboardingProgresses < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  CREATE_TRACK_INDEX_NAME = 'index_onboarding_progresses_for_create_track'
+  VERIFY_TRACK_INDEX_NAME = 'index_onboarding_progresses_for_verify_track'
+  TRIAL_TRACK_INDEX_NAME = 'index_onboarding_progresses_for_trial_track'
+  TEAM_TRACK_INDEX_NAME = 'index_onboarding_progresses_for_team_track'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :onboarding_progresses, :created_at, where: 'git_write_at IS NULL', name: CREATE_TRACK_INDEX_NAME
+    add_concurrent_index :onboarding_progresses, :git_write_at, where: 'git_write_at IS NOT NULL AND pipeline_created_at IS NULL', name: VERIFY_TRACK_INDEX_NAME
+    add_concurrent_index :onboarding_progresses, 'GREATEST(git_write_at, pipeline_created_at)', where: 'git_write_at IS NOT NULL AND pipeline_created_at IS NOT NULL AND trial_started_at IS NULL', name: TRIAL_TRACK_INDEX_NAME
+    add_concurrent_index :onboarding_progresses, 'GREATEST(git_write_at, pipeline_created_at, trial_started_at)', where: 'git_write_at IS NOT NULL AND pipeline_created_at IS NOT NULL AND trial_started_at IS NOT NULL AND user_added_at IS NULL', name: TEAM_TRACK_INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :onboarding_progresses, CREATE_TRACK_INDEX_NAME
+    remove_concurrent_index_by_name :onboarding_progresses, VERIFY_TRACK_INDEX_NAME
+    remove_concurrent_index_by_name :onboarding_progresses, TRIAL_TRACK_INDEX_NAME
+    remove_concurrent_index_by_name :onboarding_progresses, TEAM_TRACK_INDEX_NAME
+  end
+end

db/schema_migrations/20210114142443

+7ef5cb1f167c133c67fc98c0abe929516ec700179747d3353d19cf8219ebd0ef
\ No newline at end of file

db/structure.sql

@@ -22511,6 +22511,14 @@ CREATE INDEX index_on_users_lower_username ON users USING btree (lower((username
 
 CREATE INDEX index_on_users_name_lower ON users USING btree (lower((name)::text));
 
+CREATE INDEX index_onboarding_progresses_for_create_track ON onboarding_progresses USING btree (created_at) WHERE (git_write_at IS NULL);
+
+CREATE INDEX index_onboarding_progresses_for_team_track ON onboarding_progresses USING btree (GREATEST(git_write_at, pipeline_created_at, trial_started_at)) WHERE ((git_write_at IS NOT NULL) AND (pipeline_created_at IS NOT NULL) AND (trial_started_at IS NOT NULL) AND (user_added_at IS NULL));
+
+CREATE INDEX index_onboarding_progresses_for_trial_track ON onboarding_progresses USING btree (GREATEST(git_write_at, pipeline_created_at)) WHERE ((git_write_at IS NOT NULL) AND (pipeline_created_at IS NOT NULL) AND (trial_started_at IS NULL));
+
+CREATE INDEX index_onboarding_progresses_for_verify_track ON onboarding_progresses USING btree (git_write_at) WHERE ((git_write_at IS NOT NULL) AND (pipeline_created_at IS NULL));
+
 CREATE UNIQUE INDEX index_onboarding_progresses_on_namespace_id ON onboarding_progresses USING btree (namespace_id);
 
 CREATE INDEX index_open_project_tracker_data_on_service_id ON open_project_tracker_data USING btree (service_id);