Hi there.

I am currently building a system, where it would be nice to use multiple levels of views upon each other (it is a staticstics system, where traceability is important).

Is there any significant performance reduction in say 10 levels of views instead of one giant, nested sql-statement ? I especially think exection planner-wise.

The data mainly comes from one small to medium sized tabel (< 5 million rows) and a handfull small (< 5000 rows) support tables. The hardware will be okay for the job, but nothing really fancy (specs are Xeon, 2G of memory, 6 SCSI-disks in a RAID1+0) . The base will be version 8.1 provided that it gets out of beta around end-of-year.


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