SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function toDecimal32OrNull (children 1)
     ExpressionList (children 2)
      Literal \'-999999999\'
      Literal UInt64_0
    Function toDecimal32OrNull (children 1)
     ExpressionList (children 2)
      Literal \'-1000000000\'
      Literal UInt64_0
