On Tue, 9 Aug 2016 17:09:39 -0300
Paulo Roberto <betobran...@gmail.com> wrote:
> I would like something like this:
>
> "BEGIN EXCLUSIVE TRANSACTION;"
> "SELECT counter FROM mytable WHERE counterid = ?;"
> "UPDATE mytable SET counter=? WHERE counterid = ?;"
> "COMMIT TRANSACTION;"
begin transaction;
UPDATE mytable SET counter = (
select 1 + max(counter)
from mytable where counterid = ? )
WHERE counterid = ?;
select counter - 1 as counter
from mytable where counterid = ?;
commit transaction;
Standard SQL. Doesn't rely on BEGIN EXCLUSIVE. Should be just as
fast.
--jkl
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