Deltones schreef:
> Frank van Bortel wrote:
>> Deltones schreef:
>>> I posted a question last week where people where some of the guys who
>>> replied recommanded that I use "create global temporary table" instead
>>> of "create table". I tried it with the script I've been asked to modify
>>> that contained the latter construction.
>>>
>>> I get my results every time with the "create table" version, but if I'm
>>> lucky, I get results maybe 50% of the time with the "create global
>>> temporary table". Take note that it's the same queries that are run in
>>> both cases and that I also tried the "on commit delete rows", "on
>>> commit preserve rows" clause, and that the tables are dropped at the
>>> end. Why does it do this?
>>>
>>> Are tables created with "global temporary" different that regular
>>> tables?
>>>
>>> Thanks
>>>
>>> Denis
>>>
>> Yes - they exist for the duration of the session, if not shorter.
>> And you do not "use the create global temporary table everytime",
>> you just use it once.
>>
>> Your style reminds me of dBaseIII and Foxbase I used to program.
>>
>> And if you get the wrong results, you might run into a bug,
>> in which case versions do matter enormously!
>
> It's the style of the script I have to modify, not mine. The main query
> to create the first temp table is an 800 lines abomination :)
>
> As for the duration of the session, I get that, but here what I mean. I
> run the script, I get my results. Then I run the same script, let's say
> 15 seconds later, I don't get anything.
>
> But with the regular "create table" version, I get my results every
> time. That's what confuses me.
>
Are you using two sessions? Because session A has GTT "A" and session B
has GTT "B" - you cannot see GTT B from session A - session A will see
GTT A, not B.
--
Regards,
Frank van Bortel
Top-posting is one way to shut me up...
Received on Tue Aug 22 2006 - 13:08:05 CDT
