1 files changed, 40 insertions, 0 deletions
diff --git a/activerecord/lib/arel/nodes/update_statement.rb b/activerecord/lib/arel/nodes/update_statement.rb
new file mode 100644
index 0000000000..5184b1180f
--- /dev/null
+++ b/activerecord/lib/arel/nodes/update_statement.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+module Arel # :nodoc: all
+  module Nodes
+    class UpdateStatement < Arel::Nodes::Node
+      attr_accessor :relation, :wheres, :values, :orders, :limit
+      attr_accessor :key
+
+      def initialize
+        @relation = nil
+        @wheres   = []
+        @values   = []
+        @orders   = []
+        @limit    = nil
+        @key      = nil
+      end
+
+      def initialize_copy(other)
+        super
+        @wheres = @wheres.clone
+        @values = @values.clone
+      end
+
+      def hash
+        [@relation, @wheres, @values, @orders, @limit, @key].hash
+      end
+
+      def eql?(other)
+        self.class == other.class &&
+          self.relation == other.relation &&
+          self.wheres == other.wheres &&
+          self.values == other.values &&
+          self.orders == other.orders &&
+          self.limit == other.limit &&
+          self.key == other.key
+      end
+      alias :== :eql?
+    end
+  end
+end