Обсуждение: Rules and transactions

Does anybody know how the following exactly works: If i use autocommit and
create a rule which has two or more SQL statements in it's action part, are
these executed within one single transaction?
Second question: it would be helpful to see which statements are executed
acutally when executing a rule. Which settings should i use to see it in
syslog.

Thanks in advance
----
R.Hnat

am  06.07.2005, um 13:34:10 +0200 mailte Reinhard Hnat folgendes:
> Does anybody know how the following exactly works: If i use autocommit and
> create a rule which has two or more SQL statements in it's action part, are
> these executed within one single transaction?

Yes, its a single transaction.


> Second question: it would be helpful to see which statements are executed
> acutally when executing a rule. Which settings should i use to see it in
> syslog.

I'm not sure: enable stats_command_string in your postgresql.conf


Regards, Andreas
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Andreas Kretschmer    (Kontakt: siehe Header)
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"Reinhard Hnat" <hnat@logotronic.co.at> writes:
> Does anybody know how the following exactly works: If i use autocommit and
> create a rule which has two or more SQL statements in it's action part, are
> these executed within one single transaction?

Yes.

> Second question: it would be helpful to see which statements are executed
> acutally when executing a rule. Which settings should i use to see it in
> syslog.

You can't, mainly because those statements are never constructed in
textual form.  You could use EXPLAIN to get some impression of what's
going on though.

            regards, tom lane