Deprecate #add_column_with_default helper

With PostgreSQL 11, this helper isn't needed anymore. We're deprecating
this here and also adjust the rubocops accordingly.

See https://gitlab.com/gitlab-org/gitlab/-/issues/207820

db/migrate/20180115094742_add_default_project_creation_setting.rb

@@ -7,7 +7,7 @@ class AddDefaultProjectCreationSetting < ActiveRecord::Migration[4.2]
 
   def up
     unless column_exists?(:application_settings, :default_project_creation)
-      add_column_with_default(:application_settings, :default_project_creation, :integer, default: 2)
+      add_column_with_default(:application_settings, :default_project_creation, :integer, default: 2) # rubocop:disable Migration/AddColumnWithDefault
     end
   end
 

db/migrate/20180223144945_add_allow_local_requests_from_hooks_and_services_to_application_settings.rb

@@ -6,7 +6,7 @@ class AddAllowLocalRequestsFromHooksAndServicesToApplicationSettings < ActiveRec
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :allow_local_requests_from_hooks_and_services,
+    add_column_with_default(:application_settings, :allow_local_requests_from_hooks_and_services, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: false,
                             allow_null: false)

db/migrate/20180305144721_add_privileged_to_runner.rb

@@ -9,7 +9,7 @@ class AddPrivilegedToRunner < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :clusters_applications_runners, :privileged, :boolean, default: true, allow_null: false
+    add_column_with_default :clusters_applications_runners, :privileged, :boolean, default: true, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20180503193953_add_mirror_available_to_application_settings.rb

@@ -6,7 +6,9 @@ class AddMirrorAvailableToApplicationSettings < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
+    # rubocop:disable Migration/AddColumnWithDefault
     add_column_with_default(:application_settings, :mirror_available, :boolean, default: true, allow_null: false) unless column_exists?(:application_settings, :mirror_available)
+    # rubocop:enable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20180529093006_ensure_remote_mirror_columns.rb

@@ -12,7 +12,7 @@ class EnsureRemoteMirrorColumns < ActiveRecord::Migration[4.2]
     add_column :remote_mirrors, :remote_name, :string unless column_exists?(:remote_mirrors, :remote_name)
 
     unless column_exists?(:remote_mirrors, :only_protected_branches)
-      add_column_with_default(:remote_mirrors,
+      add_column_with_default(:remote_mirrors, # rubocop:disable Migration/AddColumnWithDefault
                               :only_protected_branches,
                               :boolean,
                               default: false,

db/migrate/20180601213245_add_deploy_strategy_to_project_auto_devops.rb

@@ -10,7 +10,7 @@ class AddDeployStrategyToProjectAutoDevops < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :project_auto_devops, :deploy_strategy, :integer, default: 0, allow_null: false
+    add_column_with_default :project_auto_devops, :deploy_strategy, :integer, default: 0, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20180704204006_add_hide_third_party_offers_to_application_settings.rb

@@ -6,7 +6,7 @@ class AddHideThirdPartyOffersToApplicationSettings < ActiveRecord::Migration[4.2
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :hide_third_party_offers,
+    add_column_with_default(:application_settings, :hide_third_party_offers, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: false,
                             allow_null: false)

db/migrate/20180718005113_add_instance_statistics_visibility_to_application_setting.rb

@@ -8,7 +8,7 @@ class AddInstanceStatisticsVisibilityToApplicationSetting < ActiveRecord::Migrat
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :instance_statistics_visibility_private,
+    add_column_with_default(:application_settings, :instance_statistics_visibility_private, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: false,
                             allow_null: false)

db/migrate/20180723135214_add_web_ide_client_side_preview_enabled_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddWebIdeClientSidePreviewEnabledToApplicationSettings < ActiveRecord::Mig
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :web_ide_clientside_preview_enabled,
+    add_column_with_default(:application_settings, :web_ide_clientside_preview_enabled, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: false,
                             allow_null: false)

db/migrate/20180808162000_add_user_show_add_ssh_key_message_to_application_settings.rb

@@ -10,7 +10,9 @@ class AddUserShowAddSshKeyMessageToApplicationSettings < ActiveRecord::Migration
   disable_ddl_transaction!
 
   def up
+    # rubocop:disable Migration/AddColumnWithDefault
     add_column_with_default :application_settings, :user_show_add_ssh_key_message, :boolean, default: true, allow_null: false
+    # rubocop:enable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20180831164905_add_common_to_prometheus_metrics.rb

@@ -8,7 +8,7 @@ class AddCommonToPrometheusMetrics < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:prometheus_metrics, :common, :boolean, default: false)
+    add_column_with_default(:prometheus_metrics, :common, :boolean, default: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20180907015926_add_legacy_abac_to_cluster_providers_gcp.rb

@@ -8,7 +8,7 @@ class AddLegacyAbacToClusterProvidersGcp < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:cluster_providers_gcp, :legacy_abac, :boolean, default: true)
+    add_column_with_default(:cluster_providers_gcp, :legacy_abac, :boolean, default: true) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20180924141949_add_diff_max_patch_bytes_to_application_settings.rb

@@ -12,7 +12,7 @@ class AddDiffMaxPatchBytesToApplicationSettings < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings,
+    add_column_with_default(:application_settings, # rubocop:disable Migration/AddColumnWithDefault
                             :diff_max_patch_bytes,
                             :integer,
                             default: 100.kilobytes,

db/migrate/20181017001059_add_cluster_type_to_clusters.rb

@@ -9,7 +9,7 @@ class AddClusterTypeToClusters < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:clusters, :cluster_type, :smallint, default: PROJECT_CLUSTER_TYPE)
+    add_column_with_default(:clusters, :cluster_type, :smallint, default: PROJECT_CLUSTER_TYPE) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20181028120717_add_first_day_of_week_to_application_settings.rb

@@ -7,7 +7,7 @@ class AddFirstDayOfWeekToApplicationSettings < ActiveRecord::Migration[5.0]
   DOWNTIME = false
 
   def up
-    add_column_with_default(:application_settings, :first_day_of_week, :integer, default: 0)
+    add_column_with_default(:application_settings, :first_day_of_week, :integer, default: 0) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20181031145139_add_protected_ci_variables_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddProtectedCiVariablesToApplicationSettings < ActiveRecord::Migration[5.0
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :protected_ci_variables, :boolean, default: false, allow_null: false)
+    add_column_with_default(:application_settings, :protected_ci_variables, :boolean, default: false, allow_null: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190218134158_add_masked_to_ci_variables.rb

@@ -12,7 +12,7 @@ class AddMaskedToCiVariables < ActiveRecord::Migration[5.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :ci_variables, :masked, :boolean, default: false, allow_null: false
+    add_column_with_default :ci_variables, :masked, :boolean, default: false, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190218134209_add_masked_to_ci_group_variables.rb

@@ -12,7 +12,7 @@ class AddMaskedToCiGroupVariables < ActiveRecord::Migration[5.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :ci_group_variables, :masked, :boolean, default: false, allow_null: false
+    add_column_with_default :ci_group_variables, :masked, :boolean, default: false, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190220142344_add_email_header_and_footer_enabled_flag_to_appearances_table.rb

@@ -8,7 +8,7 @@ class AddEmailHeaderAndFooterEnabledFlagToAppearancesTable < ActiveRecord::Migra
   DOWNTIME = false
 
   def up
-    add_column_with_default(:appearances, :email_header_and_footer_enabled, :boolean, default: false)
+    add_column_with_default(:appearances, :email_header_and_footer_enabled, :boolean, default: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190228192410_add_multi_line_attributes_to_suggestion.rb

@@ -8,9 +8,9 @@ class AddMultiLineAttributesToSuggestion < ActiveRecord::Migration[5.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :suggestions, :lines_above, :integer, default: 0, allow_null: false
-    add_column_with_default :suggestions, :lines_below, :integer, default: 0, allow_null: false
-    add_column_with_default :suggestions, :outdated, :boolean, default: false, allow_null: false
+    add_column_with_default :suggestions, :lines_above, :integer, default: 0, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
+    add_column_with_default :suggestions, :lines_below, :integer, default: 0, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
+    add_column_with_default :suggestions, :outdated, :boolean, default: false, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190322164830_add_auto_ssl_enabled_to_pages_domain.rb

@@ -8,7 +8,7 @@ class AddAutoSslEnabledToPagesDomain < ActiveRecord::Migration[5.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :pages_domains, :auto_ssl_enabled, :boolean, default: false
+    add_column_with_default :pages_domains, :auto_ssl_enabled, :boolean, default: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190325165127_add_managed_to_cluster.rb

@@ -8,7 +8,7 @@ class AddManagedToCluster < ActiveRecord::Migration[5.0]
   DOWNTIME = false
 
   def up
-    add_column_with_default(:clusters, :managed, :boolean, default: true)
+    add_column_with_default(:clusters, :managed, :boolean, default: true) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190329085614_add_lets_encrypt_terms_of_service_accepted_to_application_settings.rb

@@ -12,7 +12,7 @@ class AddLetsEncryptTermsOfServiceAcceptedToApplicationSettings < ActiveRecord::
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :lets_encrypt_terms_of_service_accepted, :boolean, default: false)
+    add_column_with_default(:application_settings, :lets_encrypt_terms_of_service_accepted, :boolean, default: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190402150158_backport_enterprise_schema.rb

@@ -198,7 +198,7 @@ class BackportEnterpriseSchema < ActiveRecord::Migration[5.0]
 
   def add_column_with_default_if_not_exists(table, name, *args)
     unless column_exists?(table, name)
-      add_column_with_default(table, name, *args)
+      add_column_with_default(table, name, *args) # rubocop:disable Migration/AddColumnWithDefault
     end
   end
 

db/migrate/20190415030217_add_variable_type_to_ci_variables.rb

@@ -8,7 +8,7 @@ class AddVariableTypeToCiVariables < ActiveRecord::Migration[5.0]
   ENV_VAR_VARIABLE_TYPE = 1
 
   def up
-    add_column_with_default(:ci_variables, :variable_type, :smallint, default: ENV_VAR_VARIABLE_TYPE)
+    add_column_with_default(:ci_variables, :variable_type, :smallint, default: ENV_VAR_VARIABLE_TYPE) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190416213556_add_variable_type_to_ci_group_variables.rb

@@ -8,7 +8,7 @@ class AddVariableTypeToCiGroupVariables < ActiveRecord::Migration[5.0]
   ENV_VAR_VARIABLE_TYPE = 1
 
   def up
-    add_column_with_default(:ci_group_variables, :variable_type, :smallint, default: ENV_VAR_VARIABLE_TYPE)
+    add_column_with_default(:ci_group_variables, :variable_type, :smallint, default: ENV_VAR_VARIABLE_TYPE) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190416213631_add_variable_type_to_ci_pipeline_schedule_variables.rb

@@ -8,7 +8,7 @@ class AddVariableTypeToCiPipelineScheduleVariables < ActiveRecord::Migration[5.0
   ENV_VAR_VARIABLE_TYPE = 1
 
   def up
-    add_column_with_default(:ci_pipeline_schedule_variables, :variable_type, :smallint, default: ENV_VAR_VARIABLE_TYPE)
+    add_column_with_default(:ci_pipeline_schedule_variables, :variable_type, :smallint, default: ENV_VAR_VARIABLE_TYPE) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190520200123_add_rule_type_to_approval_merge_request_approval_rules.rb

@@ -12,7 +12,7 @@ class AddRuleTypeToApprovalMergeRequestApprovalRules < ActiveRecord::Migration[5
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:approval_merge_request_rules, :rule_type, :integer, limit: 2, default: 1)
+    add_column_with_default(:approval_merge_request_rules, :rule_type, :integer, limit: 2, default: 1) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190529142545_add_dns_rebinding_protection_enabled_to_application_settings.rb

@@ -11,7 +11,7 @@ class AddDnsRebindingProtectionEnabledToApplicationSettings < ActiveRecord::Migr
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :dns_rebinding_protection_enabled,
+    add_column_with_default(:application_settings, :dns_rebinding_protection_enabled, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: true,
                             allow_null: false)

db/migrate/20190604091310_add_ldap_membership_lock.rb

@@ -11,7 +11,7 @@ class AddLdapMembershipLock < ActiveRecord::Migration[5.1]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :lock_memberships_to_ldap, :boolean, default: false)
+    add_column_with_default(:application_settings, :lock_memberships_to_ldap, :boolean, default: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190605104727_add_default_project_deletion_protection_to_application_settings.rb

@@ -11,7 +11,9 @@ class AddDefaultProjectDeletionProtectionToApplicationSettings < ActiveRecord::M
   disable_ddl_transaction!
 
   def up
+    # rubocop:disable Migration/AddColumnWithDefault
     add_column_with_default :application_settings, :default_project_deletion_protection, :boolean, default: false, allow_null: false
+    # rubocop:enable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190607085356_add_source_to_pages_domains.rb

@@ -12,7 +12,7 @@ class AddSourceToPagesDomains < ActiveRecord::Migration[5.1]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:pages_domains, :certificate_source, :smallint, default: 0)
+    add_column_with_default(:pages_domains, :certificate_source, :smallint, default: 0) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190611090827_add_time_tracking_limit_to_hours_to_application_settings.rb

@@ -12,7 +12,9 @@ class AddTimeTrackingLimitToHoursToApplicationSettings < ActiveRecord::Migration
   disable_ddl_transaction!
 
   def up
+    # rubocop:disable Migration/AddColumnWithDefault
     add_column_with_default :application_settings, :time_tracking_limit_to_hours, :boolean, default: false, allow_null: false
+    # rubocop:enable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190617123615_add_grafana_to_settings.rb

@@ -8,7 +8,7 @@ class AddGrafanaToSettings < ActiveRecord::Migration[5.1]
   DOWNTIME = false
 
   def up
-    add_column_with_default(:application_settings, :grafana_enabled, :boolean,
+    add_column_with_default(:application_settings, :grafana_enabled, :boolean, # rubocop:disable Migration/AddColumnWithDefault
                             default: false, allow_null: false)
   end
 

db/migrate/20190624123615_add_grafana_url_to_settings.rb

@@ -9,7 +9,7 @@ class AddGrafanaUrlToSettings < ActiveRecord::Migration[5.1]
 
   # rubocop:disable Migration/PreventStrings
   def up
-    add_column_with_default(:application_settings, :grafana_url, :string,
+    add_column_with_default(:application_settings, :grafana_url, :string, # rubocop:disable Migration/AddColumnWithDefault
                             default: '/-/grafana', allow_null: false)
   end
   # rubocop:enable Migration/PreventStrings

db/migrate/20190628145246_add_strategies_to_operations_feature_flag_scopes.rb

@@ -8,7 +8,9 @@ class AddStrategiesToOperationsFeatureFlagScopes < ActiveRecord::Migration[5.1]
   disable_ddl_transaction!
 
   def up
+    # rubocop:disable Migration/AddColumnWithDefault
     add_column_with_default :operations_feature_flag_scopes, :strategies, :jsonb, default: [{ name: "default", parameters: {} }]
+    # rubocop:enable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190709204413_add_rule_type_to_approval_project_rules.rb

@@ -8,7 +8,7 @@ class AddRuleTypeToApprovalProjectRules < ActiveRecord::Migration[5.1]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :approval_project_rules, :rule_type, :integer, limit: 2, default: 0, allow_null: false
+    add_column_with_default :approval_project_rules, :rule_type, :integer, limit: 2, default: 0, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190712064021_add_namespace_per_environment_flag_to_clusters.rb

@@ -11,7 +11,7 @@ class AddNamespacePerEnvironmentFlagToClusters < ActiveRecord::Migration[5.1]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :clusters, :namespace_per_environment, :boolean, default: false
+    add_column_with_default :clusters, :namespace_per_environment, :boolean, default: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190715140740_add_event_type_to_design_management_designs_versions.rb

@@ -10,7 +10,6 @@ class AddEventTypeToDesignManagementDesignsVersions < ActiveRecord::Migration[5.
   # We disable these cops here because adding this column is safe. The table does not
   # have any data in it.
   # rubocop: disable Migration/AddIndex
-  # rubocop: disable Migration/AddColumn
   def up
     add_column(:design_management_designs_versions, :event, :integer,
                limit: 2,

db/migrate/20190715173819_add_object_storage_flag_to_geo_node.rb

@@ -12,7 +12,7 @@ class AddObjectStorageFlagToGeoNode < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :geo_nodes, :sync_object_storage, :boolean, default: false
+    add_column_with_default :geo_nodes, :sync_object_storage, :boolean, default: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190729180447_add_merge_requests_require_code_owner_approval_to_protected_branches.rb

@@ -9,7 +9,7 @@ class AddMergeRequestsRequireCodeOwnerApprovalToProtectedBranches < ActiveRecord
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(
+    add_column_with_default( # rubocop:disable Migration/AddColumnWithDefault
       :protected_branches,
       :code_owner_approval_required,
       :boolean,

db/migrate/20190806071559_remove_epic_issues_default_relative_position.rb

@@ -14,7 +14,7 @@ class RemoveEpicIssuesDefaultRelativePosition < ActiveRecord::Migration[5.2]
       change_column_null :epic_issues, :relative_position, true
       change_column_default :epic_issues, :relative_position, from: 1073741823, to: nil
     else
-      add_column_with_default(:epic_issues, :relative_position, :integer, default: nil, allow_null: true)
+      add_column_with_default(:epic_issues, :relative_position, :integer, default: nil, allow_null: true) # rubocop:disable Migration/AddColumnWithDefault
     end
   end
 

db/migrate/20190816151221_add_active_jobs_limit_to_plans.rb

@@ -8,7 +8,7 @@ class AddActiveJobsLimitToPlans < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :plans, :active_jobs_limit, :integer, default: 0
+    add_column_with_default :plans, :active_jobs_limit, :integer, default: 0 # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190901174200_add_max_issue_count_to_list.rb

@@ -7,7 +7,7 @@ class AddMaxIssueCountToList < ActiveRecord::Migration[4.2]
   DOWNTIME = false
 
   def up
-    add_column_with_default :lists, :max_issue_count, :integer, default: 0
+    add_column_with_default :lists, :max_issue_count, :integer, default: 0 # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190905140605_add_cloud_run_to_clusters_providers_gcp.rb

@@ -8,7 +8,7 @@ class AddCloudRunToClustersProvidersGcp < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:cluster_providers_gcp, :cloud_run, :boolean, default: false)
+    add_column_with_default(:cluster_providers_gcp, :cloud_run, :boolean, default: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190907184714_add_show_whitespace_in_diffs_to_user_preferences.rb

@@ -11,7 +11,7 @@ class AddShowWhitespaceInDiffsToUserPreferences < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :user_preferences, :show_whitespace_in_diffs, :boolean, default: true, allow_null: false
+    add_column_with_default :user_preferences, :show_whitespace_in_diffs, :boolean, default: true, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20190918104731_add_cleanup_status_to_cluster.rb

@@ -9,7 +9,7 @@ class AddCleanupStatusToCluster < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:clusters, :cleanup_status,
+    add_column_with_default(:clusters, :cleanup_status, # rubocop:disable Migration/AddColumnWithDefault
       :smallint,
       default: 1,
       allow_null: false)

db/migrate/20191003060227_add_push_event_hooks_limit_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddPushEventHooksLimitToApplicationSettings < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :push_event_hooks_limit, :integer, default: 3)
+    add_column_with_default(:application_settings, :push_event_hooks_limit, :integer, default: 3) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191003195218_add_pendo_enabled_to_application_settings.rb

@@ -6,7 +6,7 @@ class AddPendoEnabledToApplicationSettings < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :application_settings, :pendo_enabled, :boolean, default: false, allow_null: false
+    add_column_with_default :application_settings, :pendo_enabled, :boolean, default: false, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191008013056_add_push_event_activities_limit_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddPushEventActivitiesLimitToApplicationSettings < ActiveRecord::Migration
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :push_event_activities_limit, :integer, default: 3)
+    add_column_with_default(:application_settings, :push_event_activities_limit, :integer, default: 3) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191014123159_add_expire_notification_delivered_to_personal_access_tokens.rb

@@ -8,7 +8,7 @@ class AddExpireNotificationDeliveredToPersonalAccessTokens < ActiveRecord::Migra
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :personal_access_tokens, :expire_notification_delivered, :boolean, default: false
+    add_column_with_default :personal_access_tokens, :expire_notification_delivered, :boolean, default: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191028130054_add_max_issue_weight_to_list.rb

@@ -8,7 +8,7 @@ class AddMaxIssueWeightToList < ActiveRecord::Migration[5.2]
   DOWNTIME = false
 
   def up
-    add_column_with_default :lists, :max_issue_weight, :integer, default: 0
+    add_column_with_default :lists, :max_issue_weight, :integer, default: 0 # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191029191901_add_enabled_to_grafana_integrations.rb

@@ -8,7 +8,7 @@ class AddEnabledToGrafanaIntegrations < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(
+    add_column_with_default( # rubocop:disable Migration/AddColumnWithDefault
       :grafana_integrations,
       :enabled,
       :boolean,

db/migrate/20191105155113_add_secret_to_snippet.rb

@@ -9,7 +9,7 @@ class AddSecretToSnippet < ActiveRecord::Migration[5.2]
 
   def up
     unless column_exists?(:snippets, :secret)
-      add_column_with_default :snippets, :secret, :boolean, default: false
+      add_column_with_default :snippets, :secret, :boolean, default: false # rubocop:disable Migration/AddColumnWithDefault
     end
 
     add_concurrent_index :snippets, [:visibility_level, :secret]

db/migrate/20191106144901_add_state_to_merge_trains.rb

@@ -9,7 +9,7 @@ class AddStateToMergeTrains < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :merge_trains, :status, :integer, limit: 2, default: MERGE_TRAIN_STATUS_CREATED
+    add_column_with_default :merge_trains, :status, :integer, limit: 2, default: MERGE_TRAIN_STATUS_CREATED # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191112090226_add_artifacts_to_ci_build_need.rb

@@ -8,7 +8,7 @@ class AddArtifactsToCiBuildNeed < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:ci_build_needs, :artifacts,
+    add_column_with_default(:ci_build_needs, :artifacts, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: true,
                             allow_null: false)

db/migrate/20191121193110_add_issue_links_type.rb

@@ -8,7 +8,7 @@ class AddIssueLinksType < ActiveRecord::Migration[5.1]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :issue_links, :link_type, :integer, default: 0, limit: 2
+    add_column_with_default :issue_links, :link_type, :integer, default: 0, limit: 2 # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191127163053_add_confidential_to_doorkeeper_application.rb

@@ -8,7 +8,7 @@ class AddConfidentialToDoorkeeperApplication < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(
+    add_column_with_default( # rubocop:disable Migration/AddColumnWithDefault
       :oauth_applications,
       :confidential,
       :boolean,

db/migrate/20191127221608_add_wildcard_and_domain_type_to_pages_domains.rb

@@ -9,8 +9,8 @@ class AddWildcardAndDomainTypeToPagesDomains < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :pages_domains, :wildcard, :boolean, default: false
-    add_column_with_default :pages_domains, :domain_type, :integer, limit: 2, default: PROJECT_TYPE
+    add_column_with_default :pages_domains, :wildcard, :boolean, default: false # rubocop:disable Migration/AddColumnWithDefault
+    add_column_with_default :pages_domains, :domain_type, :integer, limit: 2, default: PROJECT_TYPE # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191129134844_add_broadcast_type_to_broadcast_message.rb

@@ -10,7 +10,7 @@ class AddBroadcastTypeToBroadcastMessage < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:broadcast_messages, :broadcast_type, :smallint, default: BROADCAST_MESSAGE_BANNER_TYPE)
+    add_column_with_default(:broadcast_messages, :broadcast_type, :smallint, default: BROADCAST_MESSAGE_BANNER_TYPE) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191217165641_add_saml_provider_prohibited_outer_forks.rb

@@ -8,7 +8,7 @@ class AddSamlProviderProhibitedOuterForks < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :saml_providers, :prohibited_outer_forks, :boolean, default: false, allow_null: true
+    add_column_with_default :saml_providers, :prohibited_outer_forks, :boolean, default: false, allow_null: true # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20191218084115_add_updating_name_disabled_for_users_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddUpdatingNameDisabledForUsersToApplicationSettings < ActiveRecord::Migra
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :updating_name_disabled_for_users,
+    add_column_with_default(:application_settings, :updating_name_disabled_for_users, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: false,
                             allow_null: false)

db/migrate/20191218124915_add_repository_storage_to_snippets.rb

@@ -9,7 +9,7 @@ class AddRepositoryStorageToSnippets < ActiveRecord::Migration[5.2]
 
   # rubocop:disable Migration/PreventStrings
   def up
-    add_column_with_default(
+    add_column_with_default( # rubocop:disable Migration/AddColumnWithDefault
       :snippets,
       :repository_storage,
       :string,

db/migrate/20191218125015_add_storage_version_to_snippets.rb

@@ -8,7 +8,7 @@ class AddStorageVersionToSnippets < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(
+    add_column_with_default( # rubocop:disable Migration/AddColumnWithDefault
       :snippets,
       :storage_version,
       :integer,

db/migrate/20200122161638_add_deploy_token_type_to_deploy_tokens.rb

@@ -8,7 +8,7 @@ class AddDeployTokenTypeToDeployTokens < ActiveRecord::Migration[5.2]
   DOWNTIME = false
 
   def up
-    add_column_with_default :deploy_tokens, :deploy_token_type, :integer, default: 2, limit: 2, allow_null: false
+    add_column_with_default :deploy_tokens, :deploy_token_type, :integer, default: 2, limit: 2, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200128184209_add_usage_to_pages_domains.rb

@@ -9,7 +9,7 @@ class AddUsageToPagesDomains < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :pages_domains, :usage, :integer, limit: 2, default: PAGES_USAGE, allow_null: false
+    add_column_with_default :pages_domains, :usage, :integer, limit: 2, default: PAGES_USAGE, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200213155311_add_npm_package_requests_forwarding_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddNpmPackageRequestsForwardingToApplicationSettings < ActiveRecord::Migra
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :npm_package_requests_forwarding,
+    add_column_with_default(:application_settings, :npm_package_requests_forwarding, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: false,
                             allow_null: false)

db/migrate/20200224163804_add_version_to_feature_flags_table.rb

@@ -12,7 +12,9 @@ class AddVersionToFeatureFlagsTable < ActiveRecord::Migration[6.0]
   def up
     # The operations_feature_flags table is small enough that we can disable this cop.
     # See https://gitlab.com/gitlab-org/gitlab/-/merge_requests/25552#note_291202882
+    # rubocop:disable Migration/AddColumnWithDefault
     add_column_with_default(:operations_feature_flags, :version, :smallint, default: FEATURE_FLAG_LEGACY_VERSION, allow_null: false)
+    # rubocop:enable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200310145304_add_runtime_created_to_ci_job_variables.rb

@@ -10,7 +10,7 @@ class AddRuntimeCreatedToCiJobVariables < ActiveRecord::Migration[6.0]
   DEFAULT_SOURCE = 0 # Equvalent to Ci::JobVariable.internal_source
 
   def up
-    add_column_with_default(:ci_job_variables, :source, :integer, limit: 2, default: DEFAULT_SOURCE, allow_null: false)
+    add_column_with_default(:ci_job_variables, :source, :integer, limit: 2, default: DEFAULT_SOURCE, allow_null: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200311141053_add_ci_pipeline_schedules_to_plan_limits.rb

@@ -8,7 +8,7 @@ class AddCiPipelineSchedulesToPlanLimits < ActiveRecord::Migration[6.0]
   DOWNTIME = false
 
   def up
-    add_column_with_default(:plan_limits, :ci_pipeline_schedules, :integer, default: 0, allow_null: false)
+    add_column_with_default(:plan_limits, :ci_pipeline_schedules, :integer, default: 0, allow_null: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200311214912_add_modsecurity_mode_to_ingress_application.rb

@@ -10,7 +10,7 @@ class AddModsecurityModeToIngressApplication < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:clusters_applications_ingress, :modsecurity_mode, :smallint, default: 0, allow_null: false)
+    add_column_with_default(:clusters_applications_ingress, :modsecurity_mode, :smallint, default: 0, allow_null: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200320112455_add_cost_factor_fileds_to_ci_runners.rb

@@ -8,8 +8,8 @@ class AddCostFactorFiledsToCiRunners < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:ci_runners, :public_projects_minutes_cost_factor, :float, allow_null: false, default: 0.0)
-    add_column_with_default(:ci_runners, :private_projects_minutes_cost_factor, :float, allow_null: false, default: 1.0)
+    add_column_with_default(:ci_runners, :public_projects_minutes_cost_factor, :float, allow_null: false, default: 0.0) # rubocop:disable Migration/AddColumnWithDefault
+    add_column_with_default(:ci_runners, :private_projects_minutes_cost_factor, :float, allow_null: false, default: 1.0) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200320123839_add_letsencrypt_errors_to_pages_domains.rb

@@ -11,7 +11,7 @@ class AddLetsencryptErrorsToPagesDomains < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :pages_domains, :auto_ssl_failed, :boolean, default: false
+    add_column_with_default :pages_domains, :auto_ssl_failed, :boolean, default: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200323071918_add_bio_to_user_details.rb

@@ -9,7 +9,9 @@ class AddBioToUserDetails < ActiveRecord::Migration[6.0]
 
   # rubocop:disable Migration/PreventStrings
   def up
-    add_column_with_default(:user_details, :bio, :string, default: '', allow_null: false, limit: 255, update_column_in_batches_args: { batch_column_name: :user_id })
+    # rubocop:disable Migration/AddColumnWithDefault
+    add_column_with_default(:user_details, :bio, :string, default: '', allow_null: false, limit: 255)
+    # rubocop:enable Migration/AddColumnWithDefault
   end
   # rubocop:enable Migration/PreventStrings
 

db/migrate/20200324115359_add_namespace_storage_size_limit_to_application_settings.rb

@@ -7,7 +7,7 @@ class AddNamespaceStorageSizeLimitToApplicationSettings < ActiveRecord::Migratio
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :application_settings, :namespace_storage_size_limit, :bigint, default: 0
+    add_column_with_default :application_settings, :namespace_storage_size_limit, :bigint, default: 0 # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200325152327_add_seat_link_enabled_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddSeatLinkEnabledToApplicationSettings < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings, :seat_link_enabled,
+    add_column_with_default(:application_settings, :seat_link_enabled, # rubocop:disable Migration/AddColumnWithDefault
                             :boolean,
                             default: true,
                             allow_null: false)

db/migrate/20200330121000_add_confidential_attribute_to_epics.rb

@@ -8,7 +8,7 @@ class AddConfidentialAttributeToEpics < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:epics, :confidential, :boolean, default: false)
+    add_column_with_default(:epics, :confidential, :boolean, default: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200331195952_add_container_expiration_policies_enable_historic_entries_to_application_settings.rb

@@ -8,7 +8,7 @@ class AddContainerExpirationPoliciesEnableHistoricEntriesToApplicationSettings <
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings,
+    add_column_with_default(:application_settings, # rubocop:disable Migration/AddColumnWithDefault
                             :container_expiration_policies_enable_historic_entries,
                             :boolean,
                             default: false,

db/migrate/20200406192059_add_write_registry_to_deploy_tokens.rb

@@ -8,7 +8,7 @@ class AddWriteRegistryToDeployTokens < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:deploy_tokens, :write_registry, :boolean, default: false, allow_null: false)
+    add_column_with_default(:deploy_tokens, :write_registry, :boolean, default: false, allow_null: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200411125656_add_package_scopes_to_deploy_tokens.rb

@@ -8,8 +8,8 @@ class AddPackageScopesToDeployTokens < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:deploy_tokens, :read_package_registry, :boolean, default: false, allow_null: false)
-    add_column_with_default(:deploy_tokens, :write_package_registry, :boolean, default: false, allow_null: false)
+    add_column_with_default(:deploy_tokens, :read_package_registry, :boolean, default: false, allow_null: false) # rubocop:disable Migration/AddColumnWithDefault
+    add_column_with_default(:deploy_tokens, :write_package_registry, :boolean, default: false, allow_null: false) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

db/migrate/20200413072059_add_group_owners_can_manage_default_branch_protection_to_application_settings.rb

@@ -7,7 +7,7 @@ class AddGroupOwnersCanManageDefaultBranchProtectionToApplicationSettings < Acti
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:application_settings,
+    add_column_with_default(:application_settings, # rubocop:disable Migration/AddColumnWithDefault
                             :group_owners_can_manage_default_branch_protection,
                             :boolean,
                             default: true)

db/migrate/20200413230056_add_waf_and_cilium_logs_to_applications_fluentd.rb

@@ -8,12 +8,12 @@ class AddWafAndCiliumLogsToApplicationsFluentd < ActiveRecord::Migration[6.0]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:clusters_applications_fluentd,
+    add_column_with_default(:clusters_applications_fluentd, # rubocop:disable Migration/AddColumnWithDefault
                             :waf_log_enabled,
                             :boolean,
                             default: true,
                             allow_null: false)
-    add_column_with_default(:clusters_applications_fluentd,
+    add_column_with_default(:clusters_applications_fluentd, # rubocop:disable Migration/AddColumnWithDefault
                             :cilium_log_enabled,
                             :boolean,
                             default: true,

db/migrate/20200505164958_add_registry_settings_to_application_settings.rb

@@ -9,13 +9,13 @@ class AddRegistrySettingsToApplicationSettings < ActiveRecord::Migration[6.0]
 
   # rubocop:disable Migration/AddLimitToTextColumns
   def up
-    add_column_with_default(:application_settings,
+    add_column_with_default(:application_settings, # rubocop:disable Migration/AddColumnWithDefault
                             :container_registry_vendor,
                             :text,
                             default: '',
                             allow_null: false)
 
-    add_column_with_default(:application_settings,
+    add_column_with_default(:application_settings, # rubocop:disable Migration/AddColumnWithDefault
                             :container_registry_version,
                             :text,
                             default: '',

db/post_migrate/20181008200441_remove_circuit_breaker.rb

@@ -24,7 +24,9 @@ class RemoveCircuitBreaker < ActiveRecord::Migration[4.2]
 
   def down
     CIRCUIT_BREAKER_COLUMS_WITH_DEFAULT.each do |column, default|
+      # rubocop:disable Migration/AddColumnWithDefault
       add_column_with_default(:application_settings, column, :integer, default: default) unless column_exists?(:application_settings, column)
+      # rubocop:enable Migration/AddColumnWithDefault
     end
   end
 end

db/post_migrate/20190625184066_remove_sentry_from_application_settings.rb

@@ -28,7 +28,9 @@ class RemoveSentryFromApplicationSettings < ActiveRecord::Migration[5.0]
 
   def down
     SENTRY_ENABLED_COLUMNS.each do |column|
+      # rubocop:disable Migration/AddColumnWithDefault
       add_column_with_default(:application_settings, column, :boolean, default: false, allow_null: false) unless column_exists?(:application_settings, column)
+      # rubocop:enable Migration/AddColumnWithDefault
     end
 
     SENTRY_DSN_COLUMNS.each do |column|

db/post_migrate/20191030193050_remove_pendo_from_application_settings.rb

@@ -13,7 +13,7 @@ class RemovePendoFromApplicationSettings < ActiveRecord::Migration[5.2]
   end
 
   def down
-    add_column_with_default :application_settings, :pendo_enabled, :boolean, default: false, allow_null: false
+    add_column_with_default :application_settings, :pendo_enabled, :boolean, default: false, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
     add_column :application_settings, :pendo_url, :string, limit: 255
   end
 end

db/post_migrate/20191128162854_drop_project_ci_cd_settings_merge_trains_enabled.rb

@@ -12,6 +12,8 @@ class DropProjectCiCdSettingsMergeTrainsEnabled < ActiveRecord::Migration[5.2]
   end
 
   def down
+    # rubocop:disable Migration/AddColumnWithDefault
     add_column_with_default :project_ci_cd_settings, :merge_trains_enabled, :boolean, default: false, allow_null: true # rubocop:disable Migration/UpdateLargeTable
+    # rubocop:enable Migration/AddColumnWithDefault
   end
 end

db/post_migrate/20200120083607_remove_storage_version_column_from_snippets.rb

@@ -19,7 +19,7 @@ class RemoveStorageVersionColumnFromSnippets < ActiveRecord::Migration[5.2]
   def down
     return if column_exists?(:snippets, :storage_version)
 
-    add_column_with_default(
+    add_column_with_default( # rubocop:disable Migration/AddColumnWithDefault
       :snippets,
       :storage_version,
       :integer,

db/post_migrate/20200212052620_readd_template_column_to_services.rb

@@ -15,7 +15,7 @@ class ReaddTemplateColumnToServices < ActiveRecord::Migration[6.0]
     # to production, so we should be okay to re-add it without worrying
     # about doing a data migration.  If we needed to restore the value
     # of `template`, we would look for entries with `project_id IS NULL`.
-    add_column_with_default :services, :template, :boolean, default: false, allow_null: true
+    add_column_with_default :services, :template, :boolean, default: false, allow_null: true # rubocop:disable Migration/AddColumnWithDefault
   end
   # rubocop:enable Migration/UpdateLargeTable
 

db/post_migrate/20200221142216_remove_repository_storage_from_snippets.rb

@@ -16,7 +16,7 @@ class RemoveRepositoryStorageFromSnippets < ActiveRecord::Migration[6.0]
   def down
     return if column_exists?(:snippets, :repository_storage)
 
-    add_column_with_default(
+    add_column_with_default( # rubocop:disable Migration/AddColumnWithDefault
       :snippets,
       :repository_storage,
       :string,

doc/development/migration_style_guide.md

@@ -64,7 +64,7 @@ TARGET=12-9-stable-ee scripts/regenerate-schema
 The document ["What Requires Downtime?"](what_requires_downtime.md) specifies
 various database operations, such as
 
-- [adding, dropping, and renaming columns](what_requires_downtime.md#adding-columns)
+- [dropping and renaming columns](what_requires_downtime.md#dropping-columns)
 - [changing column constraints and types](what_requires_downtime.md#changing-column-constraints)
 - [adding and dropping indexes, tables, and foreign keys](what_requires_downtime.md#adding-indexes)
 
@@ -552,34 +552,12 @@ You can read more about adding [foreign key constraints to an existing column](d
 
 ## Adding Columns With Default Values
 
-When adding columns with default values to non-empty tables, you must use
-`add_column_with_default`. This method ensures the table is updated without
-requiring downtime. This method is not reversible so you must manually define
-the `up` and `down` methods in your migration class.
+With PostgreSQL 11 being the minimum version since GitLab 13.0, adding columns with default values has become much easier and
+the standard `add_column` helper should be used in all cases.
 
-For example, to add the column `foo` to the `projects` table with a default
-value of `10` you'd write the following:
-
-```ruby
-class MyMigration < ActiveRecord::Migration[4.2]
-  include Gitlab::Database::MigrationHelpers
-  disable_ddl_transaction!
-
-  def up
-    add_column_with_default(:projects, :foo, :integer, default: 10)
-  end
-
-  def down
-    remove_column(:projects, :foo)
-  end
-end
-```
-
-Keep in mind that this operation can easily take 10-15 minutes to complete on
-larger installations (e.g. GitLab.com). As a result, you should only add
-default values if absolutely necessary. There is a RuboCop cop that will fail if
-this method is used on some tables that are very large on GitLab.com, which
-would cause other issues.
+Before PostgreSQL 11, adding a column with a default was problematic as it would
+have caused a full table rewrite. The corresponding helper `add_column_with_default`
+has been deprecated and will be removed in a later release.
 
 ## Changing the column default
 
@@ -620,8 +598,7 @@ without requiring `disable_ddl_transaction!`.
 ## Updating an existing column
 
 To update an existing column to a particular value, you can use
-`update_column_in_batches` (`add_column_with_default` uses this internally to
-fill in the default value). This will split the updates into batches, so we
+`update_column_in_batches`. This will split the updates into batches, so we
 don't update too many rows at in a single statement.
 
 This updates the column `foo` in the `projects` table to 10, where `some_column`
@@ -747,7 +724,7 @@ set the limit to 8-bytes. This will allow the column to hold a value up to
 Rails migration example:
 
 ```ruby
-add_column_with_default(:projects, :foo, :integer, default: 10, limit: 8)
+add_column(:projects, :foo, :integer, default: 10, limit: 8)
 ```
 
 ## Timestamp column type

doc/development/what_requires_downtime.md

@@ -5,38 +5,6 @@ GitLab offline, others do require a downtime period. This guide describes
 various operations, their impact, and how to perform them without requiring
 downtime.
 
-## Adding Columns
-
-You can safely add a new column to an existing table as long as it does **not**
-have a default value. For example, this query would not require downtime:
-
-```sql
-ALTER TABLE projects ADD COLUMN random_value int;
-```
-
-Add a column _with_ a default however does require downtime. For example,
-consider this query:
-
-```sql
-ALTER TABLE projects ADD COLUMN random_value int DEFAULT 42;
-```
-
-This requires updating every single row in the `projects` table so that
-`random_value` is set to `42` by default. This requires updating all rows and
-indexes in a table. This in turn acquires enough locks on the table for it to
-effectively block any other queries.
-
-Adding a column with a default value _can_ be done without requiring downtime
-when using the migration helper method
-`Gitlab::Database::MigrationHelpers#add_column_with_default`. This method works
-similar to `add_column` except it updates existing rows in batches without
-blocking access to the table being modified. See ["Adding Columns With Default
-Values"](migration_style_guide.md#adding-columns-with-default-values) for more
-information on how to use this method.
-
-Note that usage of `add_column_with_default` with `allow_null: false` to also add
-a `NOT NULL` constraint is [discouraged](https://gitlab.com/gitlab-org/gitlab/issues/38060).
-
 ## Dropping Columns
 
 Removing columns is tricky because running GitLab processes may still be using

ee/db/geo/migrate/20170606155045_add_needs_resync_to_project_registry.rb

@@ -6,8 +6,8 @@ class AddNeedsResyncToProjectRegistry < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default(:project_registry, :resync_repository, :boolean, default: true)
-    add_column_with_default(:project_registry, :resync_wiki, :boolean, default: true)
+    add_column_with_default(:project_registry, :resync_repository, :boolean, default: true) # rubocop:disable Migration/AddColumnWithDefault
+    add_column_with_default(:project_registry, :resync_wiki, :boolean, default: true) # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

ee/db/geo/migrate/20171009162208_add_file_registry_success.rb

@@ -7,7 +7,7 @@ class AddFileRegistrySuccess < ActiveRecord::Migration[4.2]
 
   def up
     # Ensure existing rows are recorded as successes
-    add_column_with_default :file_registry, :success, :boolean, default: true, allow_null: false
+    add_column_with_default :file_registry, :success, :boolean, default: true, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
 
     change_column :file_registry, :success, :boolean, default: false
   end

ee/db/geo/migrate/20180201154345_add_repository_verification_to_project_registry.rb

@@ -3,8 +3,6 @@ class AddRepositoryVerificationToProjectRegistry < ActiveRecord::Migration[4.2]
 
   # Set this constant to true if this migration requires downtime.
   DOWNTIME = false
-
-  # rubocop:disable Migration/AddColumn
   # rubocop:disable Migration/PreventStrings
   def change
     add_column :project_registry, :repository_verification_checksum, :string
@@ -18,5 +16,4 @@ class AddRepositoryVerificationToProjectRegistry < ActiveRecord::Migration[4.2]
     add_column :project_registry, :last_wiki_verification_failure, :string
   end
   # rubocop:enable Migration/PreventStrings
-  # rubocop:enable Migration/AddColumn
 end

ee/db/geo/migrate/20180323182105_add_missing_on_primary_to_file_registry.rb

@@ -6,7 +6,7 @@ class AddMissingOnPrimaryToFileRegistry < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :file_registry, :missing_on_primary, :boolean, default: false, allow_null: false
+    add_column_with_default :file_registry, :missing_on_primary, :boolean, default: false, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

ee/db/geo/migrate/20180402170913_add_missing_on_primary_to_job_artifact_registry..rb

@@ -6,7 +6,7 @@ class AddMissingOnPrimaryToJobArtifactRegistry < ActiveRecord::Migration[4.2]
   disable_ddl_transaction!
 
   def up
-    add_column_with_default :job_artifact_registry, :missing_on_primary, :boolean, default: false, allow_null: false
+    add_column_with_default :job_artifact_registry, :missing_on_primary, :boolean, default: false, allow_null: false # rubocop:disable Migration/AddColumnWithDefault
   end
 
   def down

ee/db/geo/migrate/20180419174834_add_checksum_mismatch_fields_to_project_registry.rb

@@ -4,7 +4,7 @@ class AddChecksumMismatchFieldsToProjectRegistry < ActiveRecord::Migration[4.2]
   DOWNTIME = false
 
   def change
-    add_column :project_registry, :repository_checksum_mismatch, :boolean, null: false, default: false # rubocop:disable Migration/AddColumn
-    add_column :project_registry, :wiki_checksum_mismatch, :boolean, null: false, default: false # rubocop:disable Migration/AddColumn
+    add_column :project_registry, :repository_checksum_mismatch, :boolean, null: false, default: false
+    add_column :project_registry, :wiki_checksum_mismatch, :boolean, null: false, default: false
   end
 end

ee/db/geo/post_migrate/20180320011914_remove_last_verification_failed_columns_from_geo_project_registry.rb

@@ -7,7 +7,7 @@ class RemoveLastVerificationFailedColumnsFromGeoProjectRegistry < ActiveRecord::
   end
 
   def down
-    add_column :project_registry, :last_repository_verification_failed, :boolean, default: false, null: false # rubocop:disable Migration/AddColumn
-    add_column :project_registry, :last_wiki_verification_failed, :boolean, default: false, null: false # rubocop:disable Migration/AddColumn
+    add_column :project_registry, :last_repository_verification_failed, :boolean, default: false, null: false
+    add_column :project_registry, :last_wiki_verification_failed, :boolean, default: false, null: false
   end
 end

lib/gitlab/database/migration_helpers.rb

@@ -451,66 +451,13 @@ module Gitlab
 
       # Adds a column with a default value without locking an entire table.
       #
-      # This method runs the following steps:
-      #
-      # 1. Add the column with a default value of NULL.
-      # 2. Change the default value of the column to the specified value.
-      # 3. Update all existing rows in batches.
-      # 4. Set a `NOT NULL` constraint on the column if desired (the default).
-      #
-      # These steps ensure a column can be added to a large and commonly used
-      # table without locking the entire table for the duration of the table
-      # modification.
-      #
-      # table - The name of the table to update.
-      # column - The name of the column to add.
-      # type - The column type (e.g. `:integer`).
-      # default - The default value for the column.
-      # limit - Sets a column limit. For example, for :integer, the default is
-      #         4-bytes. Set `limit: 8` to allow 8-byte integers.
-      # allow_null - When set to `true` the column will allow NULL values, the
-      #              default is to not allow NULL values.
-      #
-      # This method can also take a block which is passed directly to the
-      # `update_column_in_batches` method.
-      def add_column_with_default(table, column, type, default:, limit: nil, allow_null: false, update_column_in_batches_args: {}, &block)
-        if transaction_open?
-          raise 'add_column_with_default can not be run inside a transaction, ' \
-            'you can disable transactions by calling disable_ddl_transaction! ' \
-            'in the body of your migration class'
-        end
+      # @deprecated With PostgreSQL 11, adding columns with a default does not lead to a table rewrite anymore.
+      #             As such, this method is not needed anymore and the default `add_column` helper should be used.
+      #             This helper is subject to be removed in a >13.0 release.
+      def add_column_with_default(table, column, type, default:, limit: nil, allow_null: false)
+        raise 'Deprecated: add_column_with_default does not support being passed blocks anymore' if block_given?
 
-        disable_statement_timeout do
-          transaction do
-            if limit
-              add_column(table, column, type, default: nil, limit: limit)
-            else
-              add_column(table, column, type, default: nil)
-            end
-
-            # Changing the default before the update ensures any newly inserted
-            # rows already use the proper default value.
-            change_column_default(table, column, default)
-          end
-
-          begin
-            default_after_type_cast = connection.type_cast(default, column_for(table, column))
-
-            if update_column_in_batches_args.any?
-              update_column_in_batches(table, column, default_after_type_cast, **update_column_in_batches_args, &block)
-            else
-              update_column_in_batches(table, column, default_after_type_cast, &block)
-            end
-
-            change_column_null(table, column, false) unless allow_null
-          # We want to rescue _all_ exceptions here, even those that don't inherit
-          # from StandardError.
-          rescue Exception => error # rubocop: disable all
-            remove_column(table, column)
-
-            raise error
-          end
-        end
+        add_column(table, column, type, default: default, limit: limit, null: allow_null)
       end
 
       # Renames a column without requiring downtime.

rubocop/cop/migration/add_column.rb

-require_relative '../../migration_helpers'
-
-module RuboCop
-  module Cop
-    module Migration
-      # Cop that checks if columns are added in a way that doesn't require
-      # downtime.
-      class AddColumn < RuboCop::Cop::Cop
-        include MigrationHelpers
-
-        MSG = '`add_column` with a default value requires downtime, ' \
-          'use `add_column_with_default` instead'.freeze
-
-        def on_send(node)
-          return unless in_migration?(node)
-
-          name = node.children[1]
-
-          return unless name == :add_column
-
-          # Ignore whitelisted tables.
-          return if table_whitelisted?(node.children[2])
-
-          opts = node.children.last
-
-          return unless opts && opts.type == :hash
-
-          opts.each_node(:pair) do |pair|
-            if hash_key_type(pair) == :sym && hash_key_name(pair) == :default
-              add_offense(node, location: :selector)
-            end
-          end
-        end
-
-        def table_whitelisted?(symbol)
-          symbol && symbol.type == :sym &&
-            WHITELISTED_TABLES.include?(symbol.children[0])
-        end
-
-        def hash_key_type(pair)
-          pair.children[0].type
-        end
-
-        def hash_key_name(pair)
-          pair.children[0].children[0]
-        end
-      end
-    end
-  end
-end

rubocop/cop/migration/add_column_with_default.rb

@@ -5,39 +5,17 @@ require_relative '../../migration_helpers'
 module RuboCop
   module Cop
     module Migration
-      # Cop that checks if columns are added in a way that doesn't require
-      # downtime.
       class AddColumnWithDefault < RuboCop::Cop::Cop
         include MigrationHelpers
 
-        MSG = '`add_column_with_default` without `allow_null: true` may cause prolonged lock situations and downtime, ' \
-          'see https://gitlab.com/gitlab-org/gitlab/issues/38060'.freeze
-
-        def_node_matcher :add_column_with_default?, <<~PATTERN
-          (send _ :add_column_with_default $_ ... (hash $...))
-        PATTERN
+        MSG = '`add_column_with_default` is deprecated, use `add_column` instead'.freeze
 
         def on_send(node)
           return unless in_migration?(node)
 
-          add_column_with_default?(node) do |table, options|
-            add_offense(node, location: :selector) if offensive?(table, options)
-          end
-        end
-
-        private
-
-        def offensive?(table, options)
-          table_blacklisted?(table) && !nulls_allowed?(options)
-        end
-
-        def nulls_allowed?(options)
-          options.find { |opt| opt.key.value == :allow_null && opt.value.true_type? }
-        end
+          name = node.children[1]
 
-        def table_blacklisted?(symbol)
-          symbol && symbol.type == :sym &&
-            BLACKLISTED_TABLES.include?(symbol.children[0])
+          add_offense(node, location: :selector) if name == :add_column_with_default
         end
       end
     end

rubocop/cop/migration/add_columns_to_wide_tables.rb

@@ -14,7 +14,6 @@ module RuboCop
 
         BLACKLISTED_METHODS = %i[
           add_column
-          add_column_with_default
           add_reference
           add_timestamps_with_timezone
         ].freeze

rubocop/cop/migration/reversible_add_column_with_default.rb

-require_relative '../../migration_helpers'
-
-module RuboCop
-  module Cop
-    module Migration
-      # Cop that checks if `add_column_with_default` is used with `up`/`down` methods
-      # and not `change`.
-      class ReversibleAddColumnWithDefault < RuboCop::Cop::Cop
-        include MigrationHelpers
-
-        def_node_matcher :add_column_with_default?, <<~PATTERN
-          (send nil? :add_column_with_default $...)
-        PATTERN
-
-        def_node_matcher :defines_change?, <<~PATTERN
-          (def :change ...)
-        PATTERN
-
-        MSG = '`add_column_with_default` is not reversible so you must manually define ' \
-          'the `up` and `down` methods in your migration class, using `remove_column` in `down`'.freeze
-
-        def on_send(node)
-          return unless in_migration?(node)
-          return unless add_column_with_default?(node)
-
-          node.each_ancestor(:def) do |def_node|
-            next unless defines_change?(def_node)
-
-            add_offense(def_node, location: :name)
-          end
-        end
-      end
-    end
-  end
-end

spec/lib/gitlab/database/migration_helpers_spec.rb

@@ -624,140 +624,12 @@ describe Gitlab::Database::MigrationHelpers do
   describe '#add_column_with_default' do
     let(:column) { Project.columns.find { |c| c.name == "id" } }
 
-    context 'outside of a transaction' do
-      context 'when a column limit is not set' do
-        before do
-          expect(model).to receive(:transaction_open?)
-            .and_return(false)
-            .at_least(:once)
-
-          expect(model).to receive(:transaction).and_yield
-
-          expect(model).to receive(:add_column)
-            .with(:projects, :foo, :integer, default: nil)
-
-          expect(model).to receive(:change_column_default)
-            .with(:projects, :foo, 10)
-
-          expect(model).to receive(:column_for)
-            .with(:projects, :foo).and_return(column)
-        end
-
-        it 'adds the column while allowing NULL values' do
-          expect(model).to receive(:update_column_in_batches)
-            .with(:projects, :foo, 10)
-
-          expect(model).not_to receive(:change_column_null)
-
-          model.add_column_with_default(:projects, :foo, :integer,
-                                        default: 10,
-                                        allow_null: true)
-        end
-
-        it 'adds the column while not allowing NULL values' do
-          expect(model).to receive(:update_column_in_batches)
-            .with(:projects, :foo, 10)
-
-          expect(model).to receive(:change_column_null)
-            .with(:projects, :foo, false)
-
-          model.add_column_with_default(:projects, :foo, :integer, default: 10)
-        end
-
-        it 'removes the added column whenever updating the rows fails' do
-          expect(model).to receive(:update_column_in_batches)
-            .with(:projects, :foo, 10)
-            .and_raise(RuntimeError)
-
-          expect(model).to receive(:remove_column)
-            .with(:projects, :foo)
-
-          expect do
-            model.add_column_with_default(:projects, :foo, :integer, default: 10)
-          end.to raise_error(RuntimeError)
-        end
-
-        it 'removes the added column whenever changing a column NULL constraint fails' do
-          expect(model).to receive(:change_column_null)
-            .with(:projects, :foo, false)
-            .and_raise(ActiveRecord::ActiveRecordError)
-
-          expect(model).to receive(:remove_column)
-            .with(:projects, :foo)
-
-          expect do
-            model.add_column_with_default(:projects, :foo, :integer, default: 10)
-          end.to raise_error(ActiveRecord::ActiveRecordError)
-        end
-      end
+    it 'delegates to #add_column' do
+      expect(model).to receive(:add_column).with(:projects, :foo, :integer, default: 10, limit: nil, null: true)
 
-      context 'when `update_column_in_batches_args` is given' do
-        let(:column) { UserDetail.columns.find { |c| c.name == "user_id" } }
-
-        it 'uses `user_id` for `update_column_in_batches`' do
-          allow(model).to receive(:transaction_open?).and_return(false)
-          allow(model).to receive(:transaction).and_yield
-          allow(model).to receive(:column_for).with(:user_details, :foo).and_return(column)
-          allow(model).to receive(:update_column_in_batches).with(:user_details, :foo, 10, batch_column_name: :user_id)
-          allow(model).to receive(:change_column_null).with(:user_details, :foo, false)
-          allow(model).to receive(:change_column_default).with(:user_details, :foo, 10)
-
-          expect(model).to receive(:add_column)
-            .with(:user_details, :foo, :integer, default: nil)
-
-          model.add_column_with_default(
-            :user_details,
-            :foo,
-            :integer,
-            default: 10,
-            update_column_in_batches_args: { batch_column_name: :user_id }
-          )
-        end
-      end
-
-      context 'when a column limit is set' do
-        it 'adds the column with a limit' do
-          allow(model).to receive(:transaction_open?).and_return(false)
-          allow(model).to receive(:transaction).and_yield
-          allow(model).to receive(:column_for).with(:projects, :foo).and_return(column)
-          allow(model).to receive(:update_column_in_batches).with(:projects, :foo, 10)
-          allow(model).to receive(:change_column_null).with(:projects, :foo, false)
-          allow(model).to receive(:change_column_default).with(:projects, :foo, 10)
-
-          expect(model).to receive(:add_column)
-            .with(:projects, :foo, :integer, default: nil, limit: 8)
-
-          model.add_column_with_default(:projects, :foo, :integer, default: 10, limit: 8)
-        end
-      end
-
-      it 'adds a column with an array default value for a jsonb type' do
-        create(:project)
-        allow(model).to receive(:transaction_open?).and_return(false)
-        allow(model).to receive(:transaction).and_yield
-        expect(model).to receive(:update_column_in_batches).with(:projects, :foo, '[{"foo":"json"}]').and_call_original
-
-        model.add_column_with_default(:projects, :foo, :jsonb, default: [{ foo: "json" }])
-      end
-
-      it 'adds a column with an object default value for a jsonb type' do
-        create(:project)
-        allow(model).to receive(:transaction_open?).and_return(false)
-        allow(model).to receive(:transaction).and_yield
-        expect(model).to receive(:update_column_in_batches).with(:projects, :foo, '{"foo":"json"}').and_call_original
-
-        model.add_column_with_default(:projects, :foo, :jsonb, default: { foo: "json" })
-      end
-    end
-
-    context 'inside a transaction' do
-      it 'raises RuntimeError' do
-        expect(model).to receive(:transaction_open?).and_return(true)
-
-        expect do
-          model.add_column_with_default(:projects, :foo, :integer, default: 10)
-        end.to raise_error(RuntimeError)
-      end
+      model.add_column_with_default(:projects, :foo, :integer,
+                                    default: 10,
+                                    allow_null: true)
     end
   end
 

spec/rubocop/cop/migration/add_column_with_default_spec.rb

@@ -27,44 +27,15 @@ describe RuboCop::Cop::Migration::AddColumnWithDefault do
       allow(cop).to receive(:in_migration?).and_return(true)
     end
 
-    let(:offense) { '`add_column_with_default` without `allow_null: true` may cause prolonged lock situations and downtime, see https://gitlab.com/gitlab-org/gitlab/issues/38060' }
+    let(:offense) { '`add_column_with_default` is deprecated, use `add_column` instead' }
 
-    context 'for blacklisted table' do
-      it 'registers an offense when specifying allow_null: false' do
-        expect_offense(<<~RUBY)
-          def up
-            add_column_with_default(:merge_request_diff_files, :artifacts, :boolean, default: true, allow_null: false)
-            ^^^^^^^^^^^^^^^^^^^^^^^ #{offense}
-          end
-        RUBY
-      end
-
-      it 'registers no offense when specifying allow_null: true' do
-        expect_no_offenses(<<~RUBY)
-          def up
-            add_column_with_default(:merge_request_diff_files, :artifacts, :boolean, default: true, allow_null: true)
-          end
-        RUBY
-      end
-
-      it 'registers an offense when allow_null is not specified' do
-        expect_offense(<<~RUBY)
-          def up
-            add_column_with_default(:merge_request_diff_files, :artifacts, :boolean, default: true)
-            ^^^^^^^^^^^^^^^^^^^^^^^ #{offense}
-          end
-        RUBY
-      end
-    end
-
-    context 'for tables not on the blacklist' do
-      it 'registers no offense for application_settings (not on blacklist)' do
-        expect_no_offenses(<<~RUBY)
-          def up
-            add_column_with_default(:application_settings, :another_column, :boolean, default: true, allow_null: false)
-          end
-        RUBY
-      end
+    it 'registers an offense ' do
+      expect_offense(<<~RUBY)
+        def up
+          add_column_with_default(:merge_request_diff_files, :artifacts, :boolean, default: true, allow_null: false)
+          ^^^^^^^^^^^^^^^^^^^^^^^ #{offense}
+        end
+      RUBY
     end
   end
 end

spec/rubocop/cop/migration/add_columns_to_wide_tables_spec.rb

@@ -42,8 +42,8 @@ describe RuboCop::Cop::Migration::AddColumnsToWideTables do
 
         expect_offense(<<~RUBY)
           def up
-            add_column_with_default(:users, :another_column, :boolean, default: false)
-            ^^^^^^^^^^^^^^^^^^^^^^^ #{offense}
+            add_column(:users, :another_column, :boolean, default: false)
+            ^^^^^^^^^^ #{offense}
           end
         RUBY
       end

spec/rubocop/cop/migration/reversible_add_column_with_default_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-require 'rubocop'
-require 'rubocop/rspec/support'
-
-require_relative '../../../../rubocop/cop/migration/reversible_add_column_with_default'
-
-describe RuboCop::Cop::Migration::ReversibleAddColumnWithDefault do
-  include CopHelper
-
-  subject(:cop) { described_class.new }
-
-  context 'in migration' do
-    before do
-      allow(cop).to receive(:in_migration?).and_return(true)
-    end
-
-    it 'registers an offense when add_column_with_default is used inside a change method' do
-      inspect_source('def change; add_column_with_default :table, :column, default: false; end')
-
-      aggregate_failures do
-        expect(cop.offenses.size).to eq(1)
-        expect(cop.offenses.map(&:line)).to eq([1])
-      end
-    end
-
-    it 'registers no offense when add_column_with_default is used inside an up method' do
-      inspect_source('def up; add_column_with_default :table, :column, default: false; end')
-
-      expect(cop.offenses.size).to eq(0)
-    end
-  end
-
-  context 'outside of migration' do
-    it 'registers no offense' do
-      inspect_source('def change; add_column_with_default :table, :column, default: false; end')
-
-      expect(cop.offenses.size).to eq(0)
-    end
-  end
-end