Remove obsolete Segment selections table

Table is not used since 13.9 and can be deleted safely

Changelog: other

db/post_migrate/20210526160133_remove_segment_selections_table.rb

+# frozen_string_literal: true
+
+class RemoveSegmentSelectionsTable < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def up
+    drop_table :analytics_devops_adoption_segment_selections
+  end
+
+  def down
+    create_table :analytics_devops_adoption_segment_selections do |t|
+      t.references :segment, index: { name: 'index_on_segment_selections_segment_id' }, null: false, foreign_key: { to_table: :analytics_devops_adoption_segments, on_delete: :cascade }
+      t.bigint :group_id
+      t.bigint :project_id
+      t.index [:group_id, :segment_id], unique: true, name: 'index_on_segment_selections_group_id_segment_id'
+      t.index [:project_id, :segment_id], unique: true, name: 'index_on_segment_selections_project_id_segment_id'
+
+      t.timestamps_with_timezone
+    end
+    add_concurrent_foreign_key(:analytics_devops_adoption_segment_selections, :projects, column: :project_id, on_delete: :cascade)
+    add_concurrent_foreign_key(:analytics_devops_adoption_segment_selections, :namespaces, column: :group_id, on_delete: :cascade)
+    add_check_constraint :analytics_devops_adoption_segment_selections, '(project_id != NULL AND group_id IS NULL) OR (group_id != NULL AND project_id IS NULL)', 'segment_selection_project_id_or_group_id_required'
+  end
+end

db/schema_migrations/20210526160133

+ee76ee2e2515c06b09fca23a77bdfb9532fa5d80fc3d5aba44a80d123b74cfa9
\ No newline at end of file

db/structure.sql

@@ -9110,25 +9110,6 @@ CREATE SEQUENCE analytics_cycle_analytics_project_value_streams_id_seq
 
 ALTER SEQUENCE analytics_cycle_analytics_project_value_streams_id_seq OWNED BY analytics_cycle_analytics_project_value_streams.id;
 
-CREATE TABLE analytics_devops_adoption_segment_selections (
-    id bigint NOT NULL,
-    segment_id bigint NOT NULL,
-    group_id bigint,
-    project_id bigint,
-    created_at timestamp with time zone NOT NULL,
-    updated_at timestamp with time zone NOT NULL,
-    CONSTRAINT segment_selection_project_id_or_group_id_required CHECK ((((project_id <> NULL::bigint) AND (group_id IS NULL)) OR ((group_id <> NULL::bigint) AND (project_id IS NULL))))
-);
-
-CREATE SEQUENCE analytics_devops_adoption_segment_selections_id_seq
-    START WITH 1
-    INCREMENT BY 1
-    NO MINVALUE
-    NO MAXVALUE
-    CACHE 1;
-
-ALTER SEQUENCE analytics_devops_adoption_segment_selections_id_seq OWNED BY analytics_devops_adoption_segment_selections.id;
-
 CREATE TABLE analytics_devops_adoption_segments (
     id bigint NOT NULL,
     last_recorded_at timestamp with time zone,
@@ -19519,8 +19500,6 @@ ALTER TABLE ONLY analytics_cycle_analytics_project_stages ALTER COLUMN id SET DE
 
 ALTER TABLE ONLY analytics_cycle_analytics_project_value_streams ALTER COLUMN id SET DEFAULT nextval('analytics_cycle_analytics_project_value_streams_id_seq'::regclass);
 
-ALTER TABLE ONLY analytics_devops_adoption_segment_selections ALTER COLUMN id SET DEFAULT nextval('analytics_devops_adoption_segment_selections_id_seq'::regclass);
-
 ALTER TABLE ONLY analytics_devops_adoption_segments ALTER COLUMN id SET DEFAULT nextval('analytics_devops_adoption_segments_id_seq'::regclass);
 
 ALTER TABLE ONLY analytics_devops_adoption_snapshots ALTER COLUMN id SET DEFAULT nextval('analytics_devops_adoption_snapshots_id_seq'::regclass);
@@ -20610,9 +20589,6 @@ ALTER TABLE ONLY analytics_cycle_analytics_project_stages
 ALTER TABLE ONLY analytics_cycle_analytics_project_value_streams
     ADD CONSTRAINT analytics_cycle_analytics_project_value_streams_pkey PRIMARY KEY (id);
 
-ALTER TABLE ONLY analytics_devops_adoption_segment_selections
-    ADD CONSTRAINT analytics_devops_adoption_segment_selections_pkey PRIMARY KEY (id);
-
 ALTER TABLE ONLY analytics_devops_adoption_segments
     ADD CONSTRAINT analytics_devops_adoption_segments_pkey PRIMARY KEY (id);
 
@@ -23898,12 +23874,6 @@ CREATE INDEX index_on_projects_lower_path ON projects USING btree (lower((path):
 
 CREATE INDEX index_on_routes_lower_path ON routes USING btree (lower((path)::text));
 
-CREATE UNIQUE INDEX index_on_segment_selections_group_id_segment_id ON analytics_devops_adoption_segment_selections USING btree (group_id, segment_id);
-
-CREATE UNIQUE INDEX index_on_segment_selections_project_id_segment_id ON analytics_devops_adoption_segment_selections USING btree (project_id, segment_id);
-
-CREATE INDEX index_on_segment_selections_segment_id ON analytics_devops_adoption_segment_selections USING btree (segment_id);
-
 CREATE INDEX index_on_snapshots_segment_id_end_time ON analytics_devops_adoption_snapshots USING btree (segment_id, end_time);
 
 CREATE INDEX index_on_snapshots_segment_id_recorded_at ON analytics_devops_adoption_snapshots USING btree (segment_id, recorded_at);
@@ -25948,9 +25918,6 @@ ALTER TABLE ONLY project_group_links
 ALTER TABLE ONLY epics
     ADD CONSTRAINT fk_dccd3f98fc FOREIGN KEY (assignee_id) REFERENCES users(id) ON DELETE SET NULL;
 
-ALTER TABLE ONLY analytics_devops_adoption_segment_selections
-    ADD CONSTRAINT fk_ded7fe0344 FOREIGN KEY (group_id) REFERENCES namespaces(id) ON DELETE CASCADE;
-
 ALTER TABLE ONLY issues
     ADD CONSTRAINT fk_df75a7c8b8 FOREIGN KEY (promoted_to_epic_id) REFERENCES epics(id) ON DELETE SET NULL;
 
@@ -26020,9 +25987,6 @@ ALTER TABLE ONLY vulnerability_external_issue_links
 ALTER TABLE ONLY epics
     ADD CONSTRAINT fk_f081aa4489 FOREIGN KEY (group_id) REFERENCES namespaces(id) ON DELETE CASCADE;
 
-ALTER TABLE ONLY analytics_devops_adoption_segment_selections
-    ADD CONSTRAINT fk_f1472b95f3 FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE;
-
 ALTER TABLE ONLY boards
     ADD CONSTRAINT fk_f15266b5f9 FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE;
 
@@ -26113,9 +26077,6 @@ ALTER TABLE ONLY ip_restrictions
 ALTER TABLE ONLY terraform_state_versions
     ADD CONSTRAINT fk_rails_04f176e239 FOREIGN KEY (terraform_state_id) REFERENCES terraform_states(id) ON DELETE CASCADE;
 
-ALTER TABLE ONLY analytics_devops_adoption_segment_selections
-    ADD CONSTRAINT fk_rails_053f00a9da FOREIGN KEY (segment_id) REFERENCES analytics_devops_adoption_segments(id) ON DELETE CASCADE;
-
 ALTER TABLE ONLY ci_build_report_results
     ADD CONSTRAINT fk_rails_056d298d48 FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE;