Random Matcher

The cells from the second table are attached to the first table. If selected, the node avoids creating duplicates from the second table. (However, if there are more rows in the first table than the second, this is not possible.)

If the user chooses a string column from both data tables, allocation depends on the values of these two columns. If possible, the new cells are chosen so that the columns match. (If there are no matches in the second column, we simply choose a random row.)

Options

First table column: An optional column from the first (original) table to use for matching rows. When a column is selected in both tables, only rows that share the same value in those columns will be matched. Select "None" for purely random matching.
Second table column: An optional column from the second (new information) table to use for matching rows. When a column is selected in both tables, only rows that share the same value in those columns will be matched. Select "None" for purely random matching.
Unique selection: If selected, the node tries to minimize duplicates selected from the second table. (Slows down performance.)
Use seed: When enabled, a fixed seed is used to produce a deterministic result. When disabled, each execution may produce different results.
Seed: The random seed to produce a deterministic result. Only used when "Use seed" is enabled.
Draw seed: Generate a random seed and set it in the seed input above for reproducible runs.

Input Ports

: Original table (these rowkeys stay).
: New table (these rows are appended to the rows of the first table).

Output Ports

: rows starting with cells from a row from the first table and then the cells from a row from the second table follow.

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Workflows

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Installation

To use this node in KNIME, install the extension KNIME Data Generation from the below update site following our NodePit Product and Node Installation Guide:

v5.12

A zipped version of the software site can be downloaded here.

Plugin provider: KNIME AG, Zurich, Switzerland

Plugin version: 5.12.0.v202606230936

On NodePit since: 2026-08-08

Last update: 2026-08-20

Tags: Modern UI

KNIME versions: Since v3.6

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