Nested transaction - I am a bank ??

Hi,

Assume I have a bank app.. When customer withdraws $10 from his accouint I
have to do following
--> update account_summary table [subtract $10 from his account]
--> update account detail_table [with other transaction details]

Requirement:
either both transactions should succeed or both transactions should
be rolled back in case of failure.

Question:
if my first update succeeds and second fails (say due to space
errors .. I have inconsistancy ..

Per the thread below stored procedures/functions cannot have commits. I
assume that means that they will be implicitly commited ??

How do I approach this simple requirment using psql ?

Thx
Deep

-----Original Message-----
From: pgsql-general-owner(at)postgresql(dot)org
[mailto:pgsql-general-owner(at)postgresql(dot)org] On Behalf Of Richard Huxton
Sent: Tuesday, January 13, 2004 4:32 AM
To: Anton(dot)Nikiforov(at)loteco(dot)ru
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: [GENERAL] Parse error help needed...

On Tuesday 13 January 2004 12:01, Anton(dot)Nikiforov(at)loteco(dot)ru wrote:
> RH> Remove the "commit" line - functions cannot define their own
> transactions RH> anyway.
> Do you know if it will be solved sometime? Or this is architecture
> dependend problem? I mean that transactions are rulez and very helpful
> rulez when working with large databases.

Nested transactions are on the todo list, but I don't know when they will
appear.

--
Richard Huxton
Archonet Ltd

---------------------------(end of broadcast)---------------------------
TIP 7: don't forget to increase your free space map settings