SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Literal UInt64_1
      Function windowFunnel (children 2)
       ExpressionList (children 2)
        Identifier timestamp
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier event
          Literal UInt64_1000
       ExpressionList (children 1)
        Literal UInt64_1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier funnel_test