SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk (children 1)
     ColumnsTransformerList (children 1)
      ColumnsReplaceTransformer (children 1)
       ColumnsReplaceTransformer::Replacement (children 1)
        Function plus (children 1)
         ExpressionList (children 2)
          Identifier a
          Literal UInt64_10
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_arith
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier b
     Literal UInt64_12
