No it never worked in a select field list. It works in the WHERE and other clauses.
You've to assign the value to a local variable and use it in a query

>I have a SQL statement where I use a class property to populate one of the resultant columns:
>
>select ....., this.objectname.property as ....
>
>it fails with
>Alias "objectname" is not found
>
>Seems to me it worked sometime in the past.
>Am I doing something wrong?