weird JOINER behaviour

Hi all,

I use KNIME 2.4.2 on Win XP and I noticed a possible bug with the Joiner node.

I tried doing an inner join of two input tables based on a common integer column.

The output joined table had more rows (!) than the biggest of the 2 input ones. These rows were duplicates and I had to remove them using an extra GroupBy node (grouping by all columns).

I am pretty sure that this did not happen on previous KNIME versions.

Has anyone else noticed that? Is this fixed on KNIME 2.5?

Thanks in advance,

George P.

If the second table has multiple rows with the same integer, then it will join these multiple rows up to the first table per matching row, hence getting additional rows in the output. Is this what is happening ?

 

Simon.