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NodeNode / LoopStart

Group Loop Start

Workflow Control Loop Support
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Group loop start, each iteration processes another group of rows. The column(s) to group on need to be specified. The input data table is sorted based on the specified columns before looping starts, by default. Sorting can be switched off if input data table is already properly sorted based on the columns to group on. If sorting is switched off, but input table is not properly sorted execution will be canceled.

External resources

  • KNIME E-Learning Course: Section 7.2. Re-executing Workflow Parts: Loops

Node details

Input ports
  1. Type: Table
    Any table
    Any input table. Each iteration will process one group of this table.
Output ports
  1. Type: Table
    Grouped input
    The current group of the input table.

Extension

The Group Loop Start node is part of this extension:

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