SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function toInt64 (alias x) (children 1)
     ExpressionList (children 1)
      Literal \'-2147483649\'
    Function toDecimal32 (children 1)
     ExpressionList (children 2)
      Identifier x
      Literal UInt64_0