Remove temporary index from vulnerabilities table

changelogs/unreleased/issue-276385-remove-temporary_index_vulnerabilities_on_id.yml

+---
+title: Remove temporary index from vulnerabilities table
+merge_request: 57656
+author: Huzaifa Iftikhar @huzaifaiftikhar
+type: removed

db/post_migrate/20210328214434_remove_temporary_index_from_vulnerabilities_table.rb

+# frozen_string_literal: true
+
+class RemoveTemporaryIndexFromVulnerabilitiesTable < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'temporary_index_vulnerabilities_on_id'
+
+  disable_ddl_transaction!
+
+  def up
+    remove_concurrent_index_by_name :vulnerabilities, INDEX_NAME
+  end
+
+  def down
+    add_concurrent_index :vulnerabilities, :id, where: "state = 2 AND (dismissed_at IS NULL OR dismissed_by_id IS NULL)", name: INDEX_NAME
+  end
+end

db/schema_migrations/20210328214434

+134fba876b69fd48697975066a734becf337f53baddd986a5c708ea6dd7cbd75
\ No newline at end of file

db/structure.sql

@@ -24363,8 +24363,6 @@ CREATE UNIQUE INDEX snippet_user_mentions_on_snippet_id_index ON snippet_user_me
 
 CREATE UNIQUE INDEX taggings_idx ON taggings USING btree (tag_id, taggable_id, taggable_type, context, tagger_id, tagger_type);
 
-CREATE INDEX temporary_index_vulnerabilities_on_id ON vulnerabilities USING btree (id) WHERE ((state = 2) AND ((dismissed_at IS NULL) OR (dismissed_by_id IS NULL)));
-
 CREATE UNIQUE INDEX term_agreements_unique_index ON term_agreements USING btree (user_id, term_id);
 
 CREATE INDEX tmp_idx_deduplicate_vulnerability_occurrences ON vulnerability_occurrences USING btree (project_id, report_type, location_fingerprint, primary_identifier_id, id);