Merge branch '467120/index-for-LFS' into 'master'

Add partial unique index for LFS objects for null repository_type

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183984



Merged-by: Jon Jenkins <jjenkins@gitlab.com>
Approved-by: Javiera Tapia <jtapia@gitlab.com>
Approved-by: Irina Bronipolsky <ibronipolsky@gitlab.com>
Approved-by: Jon Jenkins <jjenkins@gitlab.com>
Co-authored-by: Emma Park <epark@gitlab.com>

db/post_migrate/20250311023505_add_unique_index_for_lfs_objects_projects_null_repo_type.rb

+# frozen_string_literal: true
+
+class AddUniqueIndexForLfsObjectsProjectsNullRepoType < Gitlab::Database::Migration[2.2]
+  milestone '17.10'
+  disable_ddl_transaction!
+
+  TABLE_NAME = :lfs_objects_projects
+  INDEX_NAME = 'lfs_objects_projects_on_project_id_lfs_object_id_null_repo_type'
+
+  def up
+    add_concurrent_index TABLE_NAME, [:project_id, :lfs_object_id],
+      unique: true,
+      where: "repository_type IS NULL",
+      name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name TABLE_NAME, INDEX_NAME
+  end
+end

db/schema_migrations/20250311023505

+c30b9f2b16b88aadbfb3fad04c7d2b93ce792eeac01ff8dc75a9df0d4d3c114d
\ No newline at end of file

db/structure.sql

@@ -36473,6 +36473,8 @@ CREATE UNIQUE INDEX issue_user_mentions_on_issue_id_index ON issue_user_mentions
 CREATE UNIQUE INDEX kubernetes_namespaces_cluster_and_namespace ON clusters_kubernetes_namespaces USING btree (cluster_id, namespace);
+CREATE UNIQUE INDEX lfs_objects_projects_on_project_id_lfs_object_id_null_repo_type ON lfs_objects_projects USING btree (project_id, lfs_object_id) WHERE (repository_type IS NULL);
+
 CREATE UNIQUE INDEX merge_request_user_mentions_on_mr_id_and_note_id_index ON merge_request_user_mentions USING btree (merge_request_id, note_id);
 CREATE UNIQUE INDEX merge_request_user_mentions_on_mr_id_index ON merge_request_user_mentions USING btree (merge_request_id) WHERE (note_id IS NULL);