Well, I think you need only simple join in your sql, no extra features of ibatis needed: select * from CHILD, PARENT where parent_id=PARENT.id; am I right? Michal Malecki
> What about relationships from the child up to the parent? Are they also > classified as N+1? > > Suppose we have child table with a fk of parent_id. > > if I do: > > SELECT * from CHILD > > I'll get a column with parent_id with values. > > Now suppose I also want details pertaining to the parent_id along with > the recordset of Child, I need not > do 10 separate selects for the parent ... is this also an N+1 problem? > > What is the preferred iBatis model for this? > > Cheers > > Abdullah > > > Kris Jenkins wrote: > > > friendVU admin wrote: > > > >> What is n+1? > >> .V > > > > > > > > n++! :-P > > > > It's when each child object in a complex query has to be selected > > seperately. If 'parent' has 10 'children', you end up with 10+1 > > select statements being issued. See the developer's guide under > > 'Avoiding N+1 selects' for the full lowdown. Version 2.0.9 comes with > > new groupBy goodness to banish the N+1 problem. > > > > Kris > > >
