DateDiff () Function

YouTube: How to Use the DateDiff () Function in Report Custom Columns?

How to Use the DateDiff () Function in Report Custom Columns?

In this tutorial, we’ll learn how to calculate the difference between two dates using the DateDiff function in a report grid. This is helpful for calculating aging, due periods, or durations between dates.

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Accessing the Expression Designer:

• Navigate to the Reporting section.

• Open the Sales Register Detailed Report or any "Report".

• Go to Setup Column Attributes.

• Here, you'll see a list of available columns that can be used to build expressions.

• Click on "Add/Edit Expression Columns" where you can write your expression using predefined functions.

• Before adding the expression to the report, go to Other Settings.

• Ensure the Script Editor is set to VBScript.

• Click Save.

  • Note: VBScript is the default for new configurations but always verify this setting.

Writing Your First Expression

• Every expression must start with the script header: '#@LSCRIPT

• Click the (+) Plus icon to create a new expression.

• Fill in the required fields:

  • Expression Name – A unique name for your expression.

  • Expression Type – Choose either Text or Numeric depending on the expected output.

Creating a Simple DateDiff() Expression

• Double-click the new expression name to insert it into the script editor.

• Define the expression using the syntax:

  • Expression Name = DATEDIFF("D",CDATE(BILL_DATE),NOW)

    • "D" → Calculates difference in days

    • CDate(BILL_DATE) → Converts the bill date string to a date

    • Now → Represents the current system date

    Other interval options:

    • "M" – Months

    • "Y" – Years

    • "D" – Days (most commonly used)

• Save the expression once defined.

• Scroll down and check the box beside the expression name to enable it.

• Save and proceed to check the effect.

• Refresh the report to view the final result.

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Output:

• If BILL_DATE = 01/06/2025 and today is 09/06/2025, the column will show: 8

This expression is widely used in reports like aging analysis, credit control, and follow-up tracking.