On Thu, 2012-03-29 at 13:49 +0200, Ennio-Sr wrote:
A few minutes ago I wrote:
---- quote
update command:
--------
mydb=> update bibl set argomento='curatori', autore='DELLA VOLPE Galvano \ (con due capitoli aggiunti e note di) where n_prog=3285;
mydb'> ';
UPDATE 12845
mydb=>
--------
Having an adequate back-up I think I'll be able to recover the data, but
can someone explain what the hell happened?
-------- unquote
Having come out of the initial panic I reconsidered the thing with calm
and of course 'discovered' that the program has done exactly what I told
it to do, as the 'where' clause was incorporated within the two «'».
My question now is:
is there any possibility to recover such type of error while postgres is
still running and no other transacion has been committed?
I cannot help with the recovery, but as a general rule I tend to place all updates/deletes within an explicit transaction. Obviously you can then rollback the transaction should the results not be as required.
dev_reinsure=# begin;
BEGIN
dev_reinsure=# update address set addrLine1='N where recno=2';
UPDATE 911
dev_reinsure=# rollback;
ROLLBACK
Regards, ennio
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