I'm struggling to migrate an application from Zope/PostgreSQL to Zope MySQL (Why ? - because I've got a kind offer of free hosting if I use MySQL). MySQL offers a limited set of features and is missing, among other things, the ability to use subqueries - so for example in PostgreSQL you can say update note set notes =<dtml-sqlvar notes type=string> where note_id = (select note_id from artist where <dtml-sqltest artist_id type=int>) and in MySQL you can't. If you were working in a traditional programming environment you could overcome this by splitting the above into two parts - a select to retrieve the value of note_id from the artist table followed by an update of the note table using the returned value of note-id. For example select note-id into note-id-var from artist where artist-id = 23; update note set notes = 'asdasda' where note-id = note-id-var; The problem is that in Zope I believe you can't use a returned value within an SQL Method, so the above code would fail. The only way I can see to do the above is to have two separate SQL Methods, one for the select, returning the note-id-var and another for the update. This is very clumsy. I was wondering if anyone could tell me if there was a better way. Many thanks Richard Richard Moon richard@dcs.co.uk