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Joiner (deprecated)

DeprecatedKNIME Base Nodes version 4.3.1.v202101261649 by KNIME AG, Zurich, Switzerland

This node is obsolete! Please use the new Joiner node located in the Data Manipulation -> Column category. This node joins two tables (database join-like). The join on the two tables is carried out so that the first table (from the first, top input port) provides the left part of the output table and the second table (bottom input port) provides the columns for the right part. Thus, the output table has as many rows as both of the input tables (given that both tables contain exactly the same row identifier (IDs)) and as many columns as the sum of both column counts. If a row ID only occurs in one of the two tables, the remaining part (the column that should have been provided by the other table) is filled with missing cells. NOTE: This node may have high (runtime) complexity if the tables contain different row IDs or the rows are sorted differently. (If they have the same keys in the same order, this node has linear complexity.)

Options

Duplicate Columns
The dialog allows you to change settings in order to state what should be done if both input tables contain the same column names (column names must inherently be unique). The default setting is "don't execute", i.e. you are not able to execute this node (it is red). Your second choice is to filter the duplicates, i.e. only the columns from Data Inport #0 are available at the outport. As a third option you can append a suffix to duplicate column names so that they are also available at the outport.
Remove rows missing in one table
If not all rows in both tables can be matched together, they can be either removed completely from the output table (like an INNER JOIN in SQL) or the missing columns rom the one table can be replaced by missing cells (like an OUTER JOIN in SQL).

Input Ports

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Table contributing to the left part of the output table
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Table contributing to the right part of the output table

Output Ports

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Joined Table

Installation

To use this node in KNIME, install KNIME Base nodes from the following update site:

KNIME 4.3

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

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Developers

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