2012/12/21 Marko Tiikkaja <pgm...@joh.to>: > On 12/21/12 4:49 PM, I wrote: >> >> On 12/21/12 4:39 PM, Tom Lane wrote: >>> >>> What is the use-case for this? >> >> >> Currently, the way to do this would be something like: > > > I realize I didn't really answer the question. > > The use case is when you're UPDATEing or DELETEing a row and you want to > quickly assert that there should be exactly one row. For example, if you've > previously locked a row with SELECT .. FOR UPDATE, and now you want to > UPDATE or DELETE it, it better be there (or you have a bug somewhere). >
yes, it has sense probably only after keyword it should be simple implementable Regards Pavel > > > Regards, > Marko Tiikkaja > > > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
