Overview

This operation lets you clean a text by removing all or specific occurrences of a regular expression pattern. You can optionally define the strategy to either remove the first occurrence, the last occurrence, or all occurrences of the matched pattern in the text.

Syntax

This operation supports both of the following syntaxes:

Option 1

This syntax defines the text as data.

the text is "{input}"
the regular expression is "{regex}"
remove the regular expression from the text
	the remove strategy is "{strategy}"

Option 2

the regular expression is "{regex}"
remove the regular expression from "{input}"
	the remove strategy is "{strategy}"

Note: Specifying a remove strategy is optional. By default, all matching occurrences are removed.

Data

The table below lists the names of the data elements in this operation and indicates which can be renamed in the syntax.

Parameters

Parameters are placeholders for data. Refer to the table below for details on each parameter in this operation. In the syntax, replace parameters with your own values.

Examples

1. No removal strategy specified

In this example, no removal strategy is specified, so all matching occurrences are removed by default.

the regular expression is "[0-9]+"
remove the regular expression from "The order number is 12345."

The order number is .

2. Removing the first occurrence

the text is "The order number is 12345, and the reference ID is 67890."
the regular expression is "[0-9]+"
remove the regular expression from the text
  the remove strategy is "first"

The order number is , and the reference ID is 67890.

3. Removing the last occurrence

the text is "The order number is 12345, and the reference ID is 67890."
the regular expression is "[0-9]+"
remove the regular expression from the text
  the remove strategy is "last"

The order number is 12345, and the reference ID is .