select table.object_type and select table.* don't return the same value for object_type - select

Question

I'm trying to select all the 'Application Functions' linked to an object. So I've read the following query:
select
other.ea_guid as CLASSGUID, other.object_type as CLASSTYPE,
obj.name,
other.*
from t_object as obj
join (
select t_connector.start_object_id as Object2_id, t_object.* from t_object
join t_connector on t_connector.end_object_id=t_object.Object_id
where t_object.object_type = 'Application Function'
union
select t_connector.end_object_id as Object2_id, t_object.* from t_object
join t_connector on t_connector.start_object_id=t_object.Object_id
where t_object.object_type = 'Application Function'
) as other on obj.Object_id=other.Object2_id
where obj.object_id = 143299
And it is empty.
Without the where clause, it returns:
But if I change in the select the other.* by named columns like other.object_type, object_name then column obj.namegets empty and other.object_typeas another value:
I thing this difference explains why my select doesn't work. But how to explain and resolve this ?

Answer 1

EA does some special magic to some of the fields when returned by a query.
It does so based on the exact name of the returned field such as Object_Type or Note
To avoid this make sure to give those fields a different alias. e.g. Object_Type as theRealType
In this case I'm going to assume you are looking for ArchiMate application functions. The fact that this is an Application function is actually stored in the Stereotype rather than the Object_Type
A query like this should return all ArchiMate Application Functions linked to an object with id 143299
select o2.Object_ID AS CLASSGUID, o2.Object_Type AS CLASSTYPE, o2.Object_Type as theRealObjectType,
o2.*
from t_object o
inner join t_connector c on c.Connector_ID in (c.Start_Object_ID, c.End_Object_ID)
inner join t_object o2 on o2.Object_ID in (c.Start_Object_ID, c.End_Object_ID)
and o2.Object_ID <> o.Object_ID
where o.Stereotype = 'ArchiMate_ApplicationFunction'
and o2.Object_ID = 143299
This query has been written and tested on an SQL Server repository. It might need tweaking if you want to use it on a .eap file (MS Access SQL Syntax)