1 files changed, 20 insertions, 0 deletions
diff --git a/db/migrate/20210203092540_remove_has_external_wiki_constraint.rb b/db/migrate/20210203092540_remove_has_external_wiki_constraint.rb
new file mode 100644
index 00000000000..80b0cc11685
--- /dev/null
+++ b/db/migrate/20210203092540_remove_has_external_wiki_constraint.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class RemoveHasExternalWikiConstraint < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    # This reverts the following migration: add_not_null_constraint :projects, :has_external_wiki, validate: false
+    if check_not_null_constraint_exists?(:projects, :has_external_wiki)
+      remove_not_null_constraint :projects, :has_external_wiki
+    end
+  end
+
+  def down
+    # no-op
+  end
+end