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NodeNode / Manipulator

Value Lookup

ManipulationColumnSplit & CombineStreamable

This node is available for KNIME Analytics Platform version 5.0.0 or higher.

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The node has two inputs: a data table and a dictionary table.
From the data table select the column that is used to look up values in the dictionary table.
From the dictionary table select a column that contains the search keys or criteria.
When a lookup value matches an entry in the dictionary, cells from that row are appended to the data table. In case multiple rows match you can choose if you want to use the first match or the last match. If no rows match you can choose to insert missing values, match the next smaller value or match the next larger value.
Missing values are treated as ordinary values, i.e. they are valid as lookup and replacement value. The key column of the dictionary can also be a collection type. Then, the values in the collection act as alternative lookup values for the associated row.

In the output section you can select the columns in the dictionary table that shall be inserted in the output data table.

Node details

Input ports
  1. Type: Table
    Data Table
    The data table has a column that contains lookup values
  2. Type: Table
    Dictionary Table
    The dictionary table has a key column and value columns that will be inserted into the data table
Output ports
  1. Type: Table
    Data Table with additional columns
    The output table is the data table but with the added values from the dictionary table

Extension

The Value Lookup node is part of this extension:

  1. Go to item

Related workflows & nodes

  1. Go to item
  2. Go to item
  3. Go to item

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