1 files changed, 32 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/sql_type_metadata.rb b/activerecord/lib/active_record/connection_adapters/sql_type_metadata.rb
new file mode 100644
index 0000000000..ccb7e154ee
--- /dev/null
+++ b/activerecord/lib/active_record/connection_adapters/sql_type_metadata.rb
@@ -0,0 +1,32 @@
+module ActiveRecord
+  # :stopdoc:
+  module ConnectionAdapters
+    class SqlTypeMetadata
+      attr_reader :sql_type, :type, :limit, :precision, :scale
+
+      def initialize(sql_type: nil, type: nil, limit: nil, precision: nil, scale: nil)
+        @sql_type = sql_type
+        @type = type
+        @limit = limit
+        @precision = precision
+        @scale = scale
+      end
+
+      def ==(other)
+        other.is_a?(SqlTypeMetadata) &&
+          attributes_for_hash == other.attributes_for_hash
+      end
+      alias eql? ==
+
+      def hash
+        attributes_for_hash.hash
+      end
+
+      protected
+
+      def attributes_for_hash
+        [self.class, sql_type, type, limit, precision, scale]
+      end
+    end
+  end
+end