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We are using the CONNECT BY patch made by Evgen Potemkin on PostGreSQL 8.2... It works like a charm with very high performances.
But now, we are looking for the 8.3 release... Evgen Potemkin has stopped to answer about this patch (it's quite normal, he's working at mysql now...). I've tried to port the patch to the 8.3 postgresql version... It compiles but it segfault. Many data structures have changed between 8.3 and 8.2 and i'm not aware enough of postgresql internals...
So, now the solutions :
- using the connectby C function... which is min 10x slower than the patch (we may improve it a bit, but i doubt it'd beat the patch...)
- Waiting for the WITH RECURSIVE support for the 8.4 (but i don't expect anything, because this is on the todo list since many years, and i'ven't seen any code/patch since)
- Someone help me to get the patch working on the 8.3
- moving to oracle..... :-(((( or another hierarchical aware database.
It's hard to explain to our manager that if we move to the next version of postgresql there will be a performance drop.
What is the best solution
Please help me!!!
Hubert FONGARNAND
Fiducial
