To open the ESQL expression for a While node
In the flow editor, right-click the While node.
Select Edit Expression.
The Edit Expression window opens. Use this window to create or modify the ESQL expression for the While node (see Using the Edit Expression window).
To open the ESQL expression for one of the output terminals of a Switch node:
In the flow editor, right-click the Switch node.
Select where _expression is the name of the expression that you want to work on.
The Edit Expression window opens. Use this window to create or modify the ESQL expression for the output terminal see Using the Edit Expression window).