Question

I’m wondering if grails createCriteria supports group by multiple attributes like pure sql does. I’d like to list entries like this:

def criteria = DomainClass.createCriteria()
def results = criteria.list {
    groupProperty('parameterA')
    groupProperty('parameterB')
}

This will list just entries with unique parameterA and parameterB combination. The problem is that this doesn’t work, is there any solution or should I use hsql or something simmilar?

Thanks,
Mateo

Answer 1

You could try HQL. Remember that Criterias are actually builders, so they will always be only a subset of HQL, in which you can add as many properties as you want in your group by.