raise_if_bind_arity_mismatch

# File activerecord/lib/active_record/base.rb, line 1379
        def raise_if_bind_arity_mismatch(statement, expected, provided) #:nodoc:
          unless expected == provided
            raise PreparedStatementInvalid, "wrong number of bind variables (#{provided} for #{expected}) in: #{statement}"
          end
        end