1 files changed, 23 insertions, 0 deletions
diff --git a/db/migrate/20210521073920_drop_devops_adoption_namespace_uniqueness.rb b/db/migrate/20210521073920_drop_devops_adoption_namespace_uniqueness.rb
new file mode 100644
index 00000000000..d255ce844e2
--- /dev/null
+++ b/db/migrate/20210521073920_drop_devops_adoption_namespace_uniqueness.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class DropDevopsAdoptionNamespaceUniqueness < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  INDEX_NAME = 'index_analytics_devops_adoption_segments_on_namespace_id'
+  NEW_INDEX_NAME = 'idx_analytics_devops_adoption_segments_on_namespace_id'
+
+  def up
+    add_concurrent_index :analytics_devops_adoption_segments, :namespace_id, name: NEW_INDEX_NAME
+    remove_concurrent_index_by_name :analytics_devops_adoption_segments, INDEX_NAME
+  end
+
+  def down
+    # Clean up duplicated records
+    execute "DELETE FROM analytics_devops_adoption_segments WHERE id NOT IN (SELECT MIN(id) FROM analytics_devops_adoption_segments GROUP BY namespace_id)"
+
+    add_concurrent_index :analytics_devops_adoption_segments, :namespace_id, name: INDEX_NAME, unique: true
+    remove_concurrent_index_by_name :analytics_devops_adoption_segments, NEW_INDEX_NAME
+  end
+end