Icon

String Manipulation

The String Manipulation node is used to create new or updating existing string fields. It works row-by-row; this means you can reference values in a given row but you cannot reference values in other rows. For that functionality, see the Lag Column or Column Expressions nodes.

The String Manipulation node's configuration menu allows you to use values from existing columns and flow variables. These are accessible through the Column and Flow Variables lists on the left of the menu. In the center is a list of available functions. Formulas are entered in the Expressions pane below. Finally, you may create a new field (Append Column) or update an existing field (Replace Column).

Common string manipulations include:
- Replacing a value in a string with some other character. For example, removing " characters from a string (replace)
- Stripping whitespace from a string (strip, stripEnd, stripStart)
- Extracting a sub string from a particular string value (substr)
- Combining multiple string values (either from existing fields or manually entered values) into a single string (join)

Note: Functions are case sensitive. lowerCase is good, but lowercase will return an error.

String Manipulation The String Manipulation node is used to create new or updating existing string fields. Itworks row-by-row; this means you can reference values in a given row but you cannotreference values in other rows. For that functionality, see the Lag Column or ColumnExpressions nodes.The String Manipulation node's configuration menu allows you to use values fromexisting columns and flow variables. These are accessible through the Column andFlow Variables lists on the left of the menu. In the center is a list of available functions.Formulas are entered in the Expressions pane below. Finally, you may create a newfield (Append Column) or update an existing field (Replace Column).Common string manipulations include:- Replacing a value in a string with some other character. For example, removing "characters from a string (replace)- Stripping whitespace from a string (strip, stripEnd, stripStart)- Extracting a sub string from a particular string value (substr)- Combining multiple string values (either from existing fields or manually enteredvalues) into a single string (join)Note: Functions are case sensitive. lowerCase is good, but lowercase will return anerror. Take the existing Capital field and convert it to lowercase using the lowerCase function. Night Heron Data, 2023 Create a new field that combines the fields Capitaland StateName with a comma placed between eachvalue. Use the join function to combine strings. You can also calculate the length of strings using theString Manipulation node. Functions such as this canbe very helpful when trying to parse out strings(without using regular expressions). Input some dataUpdate existingcolumnCreate newcolumnCalculate string length Table Creator String Manipulation String Manipulation String Manipulation String Manipulation The String Manipulation node is used to create new or updating existing string fields. Itworks row-by-row; this means you can reference values in a given row but you cannotreference values in other rows. For that functionality, see the Lag Column or ColumnExpressions nodes.The String Manipulation node's configuration menu allows you to use values fromexisting columns and flow variables. These are accessible through the Column andFlow Variables lists on the left of the menu. In the center is a list of available functions.Formulas are entered in the Expressions pane below. Finally, you may create a newfield (Append Column) or update an existing field (Replace Column).Common string manipulations include:- Replacing a value in a string with some other character. For example, removing "characters from a string (replace)- Stripping whitespace from a string (strip, stripEnd, stripStart)- Extracting a sub string from a particular string value (substr)- Combining multiple string values (either from existing fields or manually enteredvalues) into a single string (join)Note: Functions are case sensitive. lowerCase is good, but lowercase will return anerror. Take the existing Capital field and convert it to lowercase using the lowerCase function. Night Heron Data, 2023 Create a new field that combines the fields Capitaland StateName with a comma placed between eachvalue. Use the join function to combine strings. You can also calculate the length of strings using theString Manipulation node. Functions such as this canbe very helpful when trying to parse out strings(without using regular expressions). Input some dataUpdate existingcolumnCreate newcolumnCalculate string length Table Creator String Manipulation String Manipulation String Manipulation

Nodes

Extensions

Links

Download

To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: johnemery
Created at: 2023-05-19
On NodePit since: 2023-05-21
Last update: 2025-02-16
Created with KNIME version: v4.7.2
Tags: string manipulationnode bitesnight heron data

Deploy, schedule, execute, and monitor your KNIME workflows locally, in the cloud or on-premises – with our brand new NodePit Runner.

Try NodePit Runner!