Shouldn't size(s.E...) be count(elements(s.E...)) in that case? There seems to be examples along those lines in the docs. Drawback is you have to specify all properties of s in the group by.
/Oskar 2009/10/29 Fabio Maulo <[email protected]>: > That is not the best domain to make an example but now that I know the > domain perhaps I can write a different OO query > select s, size(s.Enrolments) from Student s group by s, s.Name, > s.PreferredCourse > > 2009/10/28 Michal Drozd [toper] <[email protected]> >> >> Hi Fabio, >> >> I tried that , but it fails (I am using nh test project): >> The query string is: "select s, size(s.Enrolments) from Student s", >> and the exception: >> >> NHibernate.Test.Criteria.ProjectionsTest.GetStudentAndCountOfEnrolments: >> NHibernate.ADOException : could not execute query >> [ select student0_.studentId as col_0_0_, count >> (enrolments1_.studentId) as col_1_0_, student0_.studentId as >> studentId1_, student0_.Name as Name1_, student0_.preferredCourseCode >> as preferre3_1_ from Student student0_, Enrolment enrolments1_ where >> student0_.studentId=enrolments1_.studentId ] >> [SQL: select student0_.studentId as col_0_0_, count >> (enrolments1_.studentId) as col_1_0_, student0_.studentId as >> studentId1_, student0_.Name as Name1_, student0_.preferredCourseCode >> as preferre3_1_ from Student student0_, Enrolment enrolments1_ where >> student0_.studentId=enrolments1_.studentId] >> ----> System.Data.SqlClient.SqlException : Column >> 'Student.studentId' is invalid in the select list because it is not >> contained in either an aggregate function or the GROUP BY clause. >> >> On Oct 28, 5:03 am, Fabio Maulo <[email protected]> wrote: >> > select p, size(p.Children) from Parent p >> > >> > Fabio Maulo >> > > > > -- > Fabio Maulo > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
