I don't want negative data to be displayed. What should I do?

[Paknanarn23]

Hi, I don't want times with negative values ​​displayed in the table.

This is my code

What I want is to subtract the time in the TimeStamp field by row2 - row1 and row3 - row2 and so on. What should I do?

[sbaro_bd]

Hi @Paknanarn23 ,

You can use Sign() function to encapsulate your expression :  IF( Sign(your_expression)=-1, null(), your_expression) as [Turnover Time].

Regards.