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Join Custom Condition

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Aug 10, 2024 4:20 PM
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Joins two tables:
t1 the TOP input table  and
t2 the BOTTOM input table

Specify the columns to be returned using the column filters.
Specify the condition, using SQL (H2 Database syntax)

e.g.
t1."name" = t2."name" or t1."name"=t2."alternative_name"

table column names are case-sensitive and will work without including the double-quotes only if the table column names are all upper case.

It is best to always wrap the column names in double-quotes!

If no condition is supplied, it will perform a cross join (resulting in a table that is the product of the rows of both input tables, with every row in t1 joined to every row in t2.

Component details

Input ports
  1. Type: Table
    t1
    First table (t1) to be joined
  2. Type: Table
    t2
    Second table (t2) to be joined
Output ports
  1. Type: Table
    Joined Output
    The resultant output table from the joining of table t1 with table t2.

Used extensions & nodes

Created with KNIME Analytics Platform version 4.7.8
  • Go to item
    KNIME Base nodesTrusted extension

    KNIME AG, Zurich, Switzerland

    Version 4.7.8

    knime
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    KNIME DatabaseTrusted extension

    KNIME AG, Zurich, Switzerland

    Version 4.7.4

    knime
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    KNIME JavasnippetTrusted extension

    KNIME AG, Zurich, Switzerland

    Version 4.7.0

    knime
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    KNIME Quick FormsTrusted extension

    KNIME AG, Zurich, Switzerland

    Version 4.7.4

    knime

This component does not have nodes, extensions, nested components and related workflows

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