Can I use a "set transaction" type mechanism within a function? thx Deep
-----Original Message----- From: Joshua D. Drake [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 13, 2004 10:17 AM To: Thapliyal, Deepak Cc: 'Richard Huxton'; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [GENERAL] Nested transaction - I am a bank ?? Thapliyal, Deepak wrote: >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 .. > > Not if you run the queries as a single transaction. >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: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Richard Huxton >Sent: Tuesday, January 13, 2004 4:32 AM >To: [EMAIL PROTECTED] >Cc: [EMAIL PROTECTED] >Subject: Re: [GENERAL] Parse error help needed... > > >On Tuesday 13 January 2004 12:01, [EMAIL PROTECTED] 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. > > > -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC and S/JDBC Postgresql support, programming shared hosting and dedicated hosting. +1-503-667-4564 - [EMAIL PROTECTED] - http://www.commandprompt.com Mammoth PostgreSQL Replicator. Integrated Replication for PostgreSQL ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])
