SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 5)
    Literal NULL
    Literal UInt64_1
    Literal \'test\'
    Literal Array_[UInt64_1, UInt64_2, UInt64_3]
    Function array (children 1)
     ExpressionList (children 2)
      Literal Tuple_(UInt64_1, UInt64_1)
      Literal Tuple_(UInt64_1, UInt64_1)