Previous function, but for two (or more) rows prev

问题:

I'd like to get the value of a cell, two rows previous, is that possible?

I know I can do the row previous, but I'd like two (or more) rows previous

Previous({myTable.myColumn}) 

回答1:

Not with any standard functionality that I'm aware of.

Off the top of my head, though, you could try shared variables.

For example, you could have PrevRecord1 and PrevRecord2 variables. A function that is in the detail row of the report would then update PrevRecord2 with PrevRecord1, and then update PrevRecord1 with Previous({myTable.myColumn}).

The obvious downside to this solution is you'll need a variable for each row you want to go back.

回答2:

Per answer on crystalreportsbook.com

Crystal is limited to only one record previous and one record after (next).