OK, the first thing is: a finder's SQL only returns keys, not data. The result of calling a finder is that the caller will have a collection of entity beans to call.
EJB isn't like a RAD tool, where you define a screen around a query - you'll only really leverage EJB if you think about your problem domain in terms of objects with relationships between them. And then you'll have a whole different set of frustrations 8^})
Is the finder on the for table2? That's why that's all the data you get.
Now solving your issue:
What's the context that you need this from? Do you have an entry in Table1 and you need all the table2 data for that, or is it more of a search. I assume it's a search.
Unfortunately, entity beans don't do real well in that context. You _could_ define entities for both table1 and table2, then add a relation ship from one to the other. The problem there is that you'll get a lot more database activity that you probably want.
To really get this to work right (and perform decently), I'd define a 'SearchSummary' object (serializable) with id, data, name as attributes and define a stateless session bean with a method taking whatever parameters you're searching by and just use JDBC to get the data and return a collection of those SearchSummary things.
Hope this helps.