1 files changed, 23 insertions, 0 deletions
diff --git a/db/post_migrate/20220307192725_create_unique_index_release_tag_project.rb b/db/post_migrate/20220307192725_create_unique_index_release_tag_project.rb
new file mode 100644
index 00000000000..8540f19f079
--- /dev/null
+++ b/db/post_migrate/20220307192725_create_unique_index_release_tag_project.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class CreateUniqueIndexReleaseTagProject < Gitlab::Database::Migration[1.0]
+  INDEX_NAME = 'index_releases_on_project_tag_unique'
+  OLD_INDEX_NAME = 'index_releases_on_project_id_and_tag'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :releases,
+                         %i[project_id tag],
+                         unique: true,
+                         name: INDEX_NAME
+    remove_concurrent_index_by_name :releases, name: OLD_INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :releases, name: INDEX_NAME
+    add_concurrent_index :releases,
+                         %i[project_id tag],
+                         name: OLD_INDEX_NAME
+  end
+end