SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 4)
    Function toUInt8OrDefault (children 1)
     ExpressionList (children 1)
      Literal \'123\'
    Function toUInt8OrDefault (children 1)
     ExpressionList (children 1)
      Literal \'-123\'
    Function toUInt8OrDefault (children 1)
     ExpressionList (children 1)
      Literal \'1234\'
    Function toUInt8OrDefault (children 1)
     ExpressionList (children 1)
      Literal \' 123\'
