Re: problem with new autocommit config parameter and jdbc
От | snpe |
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Тема | Re: problem with new autocommit config parameter and jdbc |
Дата | |
Msg-id | 200209111513.20635.snpe@snpe.co.yu обсуждение исходный текст |
Ответ на | Re: problem with new autocommit config parameter and jdbc (Rod Taylor <rbt@rbt.ca>) |
Ответы |
Re: problem with new autocommit config parameter and jdbc
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Список | pgsql-hackers |
On Wednesday 11 September 2002 02:38 pm, Rod Taylor wrote: > > > > Why rollback.This is error (typing error).Nothing happen. > > > > I think that we need clear set : what is start transaction ? > > > > I think that transaction start with change data in database > > > > (what don't change data this start not transaction. > > > > > > Another interesting case for a select is, what about > > > select func(x) from table; > > > Does func() have any side effects that might change data? > > > At what point do we decide that the statement needs a > > > transaction? > > > > Function in select list mustn't change any data. > > What if function change data in from clause ? > > Why can't the function change data? I've done this one a number of > times through views to log the user pulling out information from the > system, and what it was at the time (time sensitive data). Scenario : Func change data in table in form clause I fetch 3 (after row 1 and 2) and then change row 1 What result expect ?
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