Thread: Re: [PATCHES] Automatic transactions in psql

Re: [PATCHES] Automatic transactions in psql

From
Thomas Lockhart
Date:
...
> > Secondly, it adds a "begin transaction" option that, when
> > enabled, ensures that you are always inside a transaction
> > while in psql, so you can always rollback. It does this
> > by issuing a BEGIN at the appropriate times. This patch
> > (if ever accepted) conflicts a bit with LO_RTANSACTION:
> > psql now *does* have a way to know if it is in a
> > transaction or not, so that part may need to get rewritten.

This part of the feature (corresponding to the Ingres "autocommit = off"
feature) should be implemented in the backend rather than in psql. I've
had a moderate interest in doing this but haven't gotten to it; if
someone wants to pick it up I'm sure it would be well received...
                     - Thomas


Re: [PATCHES] Automatic transactions in psql

From
Bruce Momjian
Date:
Thomas Lockhart wrote:
> ...
> > > Secondly, it adds a "begin transaction" option that, when
> > > enabled, ensures that you are always inside a transaction
> > > while in psql, so you can always rollback. It does this
> > > by issuing a BEGIN at the appropriate times. This patch
> > > (if ever accepted) conflicts a bit with LO_RTANSACTION:
> > > psql now *does* have a way to know if it is in a
> > > transaction or not, so that part may need to get rewritten.
> 
> This part of the feature (corresponding to the Ingres "autocommit = off"
> feature) should be implemented in the backend rather than in psql. I've
> had a moderate interest in doing this but haven't gotten to it; if
> someone wants to pick it up I'm sure it would be well received...

Agreed.  I wondered whether we could use the psql status part of this
patch.  We currently cound parens and quotes, and show that in the psql
prompt.  Could we do that for transaction status?  Considering we
already track the parens/quotes, another level of status on the psql
display seems  a bit much, even if we could do it reliably.  Comments?

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