Not exactly - Abdullah fliped the problem and wanted to selected children, and parent for each other. Then you don't need group by. When you want parent and list of children - then of course you are right. Michal Malecki
> > >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? > > > Well, that's the right query, but only if you use groupBy. Assuming > you're trying to get Parent objects populated with their correct Child > objects, you query will return something like: > > parent_id | child_id > ----------+--------- > 1 | a > 1 | b > 1 | c > 2 | d > > Without groupBy in your resultMap, you'll end up with 3 parent objects, > each with one child. What you wanted was 2 parents, one with three > children. > > So you're right, groupBy allows you to do this with one query, but > before v2.0.9 you'd've needed two separate ones to get the right result. > > Kris > > -- > Kris Jenkins > Email: [EMAIL PROTECTED] > Blog: http://cafe.jenkster.com/ > Wiki: http://wiki.jenkster.com/ > > >
