1 files changed, 20 insertions, 0 deletions
diff --git a/db/migrate/20200618134223_restore_previous_schema_without_lock_version_null_constraint.rb b/db/migrate/20200618134223_restore_previous_schema_without_lock_version_null_constraint.rb
new file mode 100644
index 00000000000..85e98d05d02
--- /dev/null
+++ b/db/migrate/20200618134223_restore_previous_schema_without_lock_version_null_constraint.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class RestorePreviousSchemaWithoutLockVersionNullConstraint < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  TABLES = %i(epics merge_requests issues ci_stages ci_builds ci_pipelines).freeze
+
+  disable_ddl_transaction!
+
+  def up
+    TABLES.each do |table|
+      remove_not_null_constraint table, :lock_version
+    end
+  end
+
+  def down
+    # no-op
+  end
+end