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Rule engine in loop test

The goal is to replace all NULL entries in a column with a KNIME missing value (?)This can easily be achieved using rule engine which identifies any cells that DO NOT containthe word NULL and returning the original value, but doesn't return a value if the cell contains thekeyworkd (NULL).However, this doesn't work in a column list loop. The Rule Engine doesn't recognise thevariable as a colum name and treats it as a string, rendering the incorrect output. Create tableof test dataReplace NULLIn column 2Loopoverall columnsReplaceNULL in selectedcolumnEnd loop Table Creator Rule Engine Column ListLoop Start Rule Engine Loop End (ColumnAppend) The goal is to replace all NULL entries in a column with a KNIME missing value (?)This can easily be achieved using rule engine which identifies any cells that DO NOT containthe word NULL and returning the original value, but doesn't return a value if the cell contains thekeyworkd (NULL).However, this doesn't work in a column list loop. The Rule Engine doesn't recognise thevariable as a colum name and treats it as a string, rendering the incorrect output. Create tableof test dataReplace NULLIn column 2Loopoverall columnsReplaceNULL in selectedcolumnEnd loop Table Creator Rule Engine Column ListLoop Start Rule Engine Loop End (ColumnAppend)

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Created by: DavidPlummer
Created at: 2021-03-17
On NodePit since: 2021-03-17
Last update: 2024-11-23
Created with KNIME version: v4.3.2

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