> From: Stephan Szabo > On Mon, 4 Mar 2002, otisg wrote: > > From: Stephan Szabo > > On 28 Feb 2002, OtisUsenet wrote: > > > > I was wondering if anyone here can help. I could not get any help on > > pgsql-sql nor pgsql-general mailing lists. > > > > > I'm having trouble getting functions with SET TRANSACTION ISOLATION > > ... to parse. > > > > Without nested transactions, you're not going to have any luck I > think. > > First of all the extra begin/end in the function are not allowed and > > IIRC, set transaction isolation level must be the first statement of > the > > transaction which it won't be since the enclosing transaction will > have > > started the select simple_fun(). > > > Hello, > > > If I understand it correctly the function should then look like this: > > > CREATE FUNCTION simple_fun() RETURNS INTEGER AS ' > SET TRANSACTION ISOLATION LEVEL SERIALIZABLE > BEGIN > RETURN 1; > END; > ' LANGUAGE 'plpgsql'; > > Only declarations go outside the begin. As far as I can see, you > really just can't put a set transaction isolation level in a function > and expect it to work. If PostgreSQL had nested transactions you could > presumably do it then, but it doesn't.
So how does one use SET TRANSACTION...? I have not been able to find any examples of that in the docs, other than the reference document. Could you please provide a simple example of how SET TRANSACTION... is used?
Thank you, Otis _______________________________________________________________ Get your own FREE email account at iVillage.com! http://webmail.ivillage.com/
