The problem is that the time it takes to perform queries on the view seems
to grow exponentially as the number of rows in TABLE1 grows. I guess this
happens because of the way that SAPDB performs the query (i.e. join first to
create the view, then perform query), so a huge intermediate table has to be
created.

as far as i can imagine, SAPDB uses a sub-query to query results from a view. SAPDB down't support query-rewriting, which might optimize a query on a sub-query to one query. so one shouldn't use to do queries on them - i guess.



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