Hi All,
i was wondering if someone could point me in the right direction -i'm struggling with an Expression. i'm needing to say that if column A and column
B are NULL then the Derived Column value would be the Value of Column C. - is this straight forward?
are you also able to hold that text, until the condition is met again? - so when the condition is true and column c's value is used - hold that value until
the condition is met again?
Hoping i've explained it OK.
regards
Jason