OVER Clause

[mlauber71]

@feduss welcome to the KNIME forum.

If you want to use OVER like in an SQL code you might use a database node but this would depend on the implementation of window functions in your database.

RANK variable in DB

@chanoufi_marwa one way to do it is to use a Hive environment and a RANK function. Other SQL databases should also support RANK like H2 (Window Functions). Hint: the KNIME implementation of H2 currently has the version 1.4.196. Unfortunately with H2 the RANK etc functions are only supported with version 1.4.198 or later … @ScottF might be an interesting case to update that version

One example of using OVER just with KNIME resources is shown in this thread using a local big data environment.

School of duplicates - and how to deal with them

Dealing with duplicates is a constant theme with data scientist. And a lot of things can go wrong. The easiest ways to deal with them is SQL’s GROUP BY or DISTINCT. Just get rid of them and be done. But as this examples might demonstrate this might not always be the best option. Even if your data provider swears your combined IDs are unique especially in Big Data scenarios there might still be lurking some muddy duplicates and you should still be able to deal with them. And you should be able t…

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