I am a beginnner with Knime and i really need some help here.
For example the table above. I need to filter the data (row) out according these criteria.
Same ID and Same User but different Login time.
it means col1 equal to col2 but doesnt equal to col3.
I already used sorter to sort the according to ID to see the repeated ID and User and my next step will drawing them out (for example add an extra column)
ID
User
Date Login
Repeat
1
John
12.3.12
Yes
1
John
13.3.12
Yes
2
Mark
23.3.12
-
3
Elsa
12.3.12
-
I tried row filter and so on but maybe my lack of knowledge in this. I couldnt get it.
This looks like an application for the group by node. You can group by id, user and login time and specify no aggregation operation. This will retain only rows where any of the three columns is different from the other rows.
One solution is to use group by node, grouping by each id (demand table) and id (accounts table), taking into account to tick to not include missing cells.