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Loop End

KNIME Base Nodes version 4.0.1.v201908131444 by KNIME AG, Zurich, Switzerland

Node at the end of a loop. It is used to mark the end of a workflow loop and collects the intermediate results by row-wise concatenation of the incoming tables. The start of the loop is defined by the loop start node, in which you can define how often the loop should be executed (either fixed or derived from data, e.g. the "group loop start"). All nodes in between are executed that many times.


Row ID policy
It specifies how to deal with the row IDs.
  • Generate new row IDs - row IDs are newly generated (Row0, Row1, ...)
  • Unique row IDs by appending a suffix - the iteration number is added to each row ID from the incoming table, thus making the row IDs unique over all iterations
  • Leave row IDs unmodified - the incoming row IDs are not altered. In this case you have to make sure that there are not duplicate row IDs in different iterations. Otherwise an error occurs.
Add iteration column
Allows you to add a column containing the iteration number to the output table.
Ignore empty input tables
If this option is checked empty input tables and there structure are ignored and will not cause the node to fail.
Allow variable column types
If checked, the loop does not fail when the column types between different table iterations change.
Allow changing table specifications
If checked, the table specifications between iterations can differ. If column have been added or removed between iterations, missing values are inserted accordingly in the result table. If not checked and the table specifications differ, the node will fail.

Input Ports

Any datatable

Output Ports

Collected results from the loop body

Best Friends (Incoming)

Best Friends (Outgoing)