Re: PostgreSQL vs. Oracle vs. Microsoft - Mailing list pgsql-performance

From Dave Cramer
Subject Re: PostgreSQL vs. Oracle vs. Microsoft
Date
Msg-id 41E31815.4030908@fastcrypt.com
Whole thread Raw
In response to Re: PostgreSQL vs. Oracle vs. Microsoft  (Gary Doades <gpd@gpdnet.co.uk>)
Responses Re: PostgreSQL vs. Oracle vs. Microsoft
List pgsql-performance
Ok, so one use case is to select a large number of rows and do some
non-trivial operation on them.
I can see where getting the rows inside the server process ( ie some
procedural language ) thereby reducing the round trip overhead would be
beneficial. However how do you deal with the lack of control ? For
instance what happens if you run out of memory while doing this ? I'm
not sure about other DB'S but if you crash the procedural language
inside postgres you will bring the server down.

It would seem to me that any non-trivial operation would be better
handled outside the server process, even if it costs you the round trip.

Dave



Gary Doades wrote:

> Dave Cramer wrote:
>
>> I'm curious, why do you think that's serious ? What do you really
>> expect to do in the stored procedure ? Anything of consequence will
>> seriously degrade performance if you select it in say a million rows.
>>
>
> I'm not sure what you mean by "select it in a million rows". I would
> expect to write a procedure within the database engine to select a
> million rows, process them and return the result to the client. Very
> efficient.
>
> Cheers,
> Gary.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>
>

--
Dave Cramer
http://www.postgresintl.com
519 939 0336
ICQ#14675561


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