Question:
I can't seem to figure out how I can select only distinct entries in Llblgen 2.6 self-service model
I essentially want this query.
select distinct City from peopleTable where *predicates* I've got my PeopleCollection and I'm not sure if there's a distinct method I can call or argument I can pass to GetMulti().
Solution:1
Entities by definition cannot be distinct - even if they have the same value they are different rows in the same table.
You could use a TypedList or DynamicList to get a distinct list of city values - one of the parameters on the Fetch call is to get distinct items.
Or if you are using LINQ you could do
List<string> cities = PeopleCollection.Select(x=>x.City).Distinct();
Solution:2
Adding a diff't answer to compliment Matt's, since I ended up here, but couldn't find a simple answer of how to do this anywhere, and you can't format code in a comment
ResultsetFields fields = new ResultsetFields(1); fields.DefineField(PeopleFields.City, 0); DataTable dynamicList = new DataTable(); adapter.FetchTypedList(fields, dynamicList, null, false); foreach (DataRow row in dynamicList.Rows) Cities.Add(row[0] as string); This gives a distinct list of all cities, filtering is done with an IRelationPredicateBucket instead of null to FetchTypedList.
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