Re: visibility rules for AFTER UPDATE Constraint Triggers Function

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От Richard Broersma Jr
Тема Re: visibility rules for AFTER UPDATE Constraint Triggers Function
Дата
Msg-id 914600.47286.qm@web31807.mail.mud.yahoo.com
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Ответ на Re: visibility rules for AFTER UPDATE Constraint Triggers Function  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: visibility rules for AFTER UPDATE Constraint Triggers Function  (Tom Lane <tgl@sss.pgh.pa.us>)
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--- On Tue, 1/1/08, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Please provide a self-contained example.

Basically the example demonstrates the difference a single tuple UPDATE when preformed the following two ways:

UPDATE table ...;  -- Sees OLD.

BEGIN; UPDATE table ...; COMMIT; --Sees NEW.

I was my understanding that all single DML statement are wrapped in their own transaction so I thought that these two
statementsshould preform the same. 

Regards,
Richard Broersma Jr.

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