SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function plus (children 1)
     ExpressionList (children 2)
      Function toLowCardinality (children 1)
       ExpressionList (children 1)
        Literal UInt64_1
      Function materialize (children 1)
       ExpressionList (children 1)
        Function toLowCardinality (children 1)
         ExpressionList (children 1)
          Literal UInt64_2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier realtimebuff__fuzz_19
   ExpressionList (children 1)
    Function toLowCardinality (children 1)
     ExpressionList (children 1)
      Literal UInt64_1
 Identifier Null
