SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier p.begin
    Identifier e.begin
    Identifier e.value
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier probe0 (alias p)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier events0 (alias e)
     TableJoin (children 1)
      Function lessOrEquals (children 1)
       ExpressionList (children 2)
        Identifier p.begin
        Identifier e.begin
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier p.begin
