Re: [SQL] Savepoints and SELECT FOR UPDATE in 8.2

On Fri, Aug 1, 2008 at 11:02 AM, EXT-Rothermel, Peter M
<Peter(dot)M(dot)Rothermel(at)boeing(dot)com> wrote:
>
> I was thinking of something like this:
>
> connect to DB
>
> BEGIN
>
> SELECT * FROM table_foo where foo_state = 'queued' FOR UPDATE;
> for each row
> do [
>
> SAVEPOINT s;
> UPDATE foo_resource SET in_use = 1 WHERE ...;
>
> status = application_logic_code(foo_column1, foo_column2);
>
> IF status OK
> THEN
> ROLLBACK TO SAVEPOINT s;
> ELSE
> RELEASE SAVEPOINT s;
> ENDIF
> ]
>
>
> COMMIT;
>
> I found a caution in the documentation that says that SELECT FOR UPDATE
> and SAVEPOINTS is not implemented correctly in version 8.2:
>
> http://www.postgresql.org/docs/8.2/interactive/sql-select.html#SQL-FOR-U
> PDATE-SHARE
>
> Any suggestions?

Why not plain rollback?