SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function dictGetOrDefault (children 1)
     ExpressionList (children 5)
      Literal \'test_dictionary\'
      Literal \'value\'
      Literal UInt64_1
      Literal \'DefaultValue\'
      Literal UInt64_1
