> I lean with you and Tom.  While running it over the same libpq protocol 
> would be helpful in some ways, it would have a lot of drawbacks and 
> would really change the function of libpq.  I think a separate debugging 
> protocol is in order.
> 
One message? I can't belive :). 

> work on it (ANTLR currently generates Python, Java, or C++).  I don't 
> suggest we really reuse one of the current VMs as it would require a lot 
> more support and coordination.  Let's take the bytecode discussion off 
> this thread and move it to another.  There is certainly a good and bad 
> side to using bytecode and I would be glad to discuss it in another thread.
> 

I see only one advantage of WM - sharing between languages. But SQL/PSM or 
PL/pgSQL are not clasic languages. Big advantage is big disadvantage too 
-> relation on SQL engine. I can use all SQL types, but I can't to do
efective concation of strings. Sorry, I don't see any benefit of bytecode 
for these languages. 

PL/pgSQL works fine (for specific task). What can be better?

  o evaluation of expressions. -- needs integration with sql parser
  o debugging 
  o persistent compiled code
  o syntax

Please, write me, private, your opinions. And don't scowl at me, so I am 
in oportunity :).

Regards
Pavek


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