SSIS Conditional Split Error: The expression evaluated to NULL

SSIS conditional split complains of error if the incoming columns in a condition are evaluated as NULL.

The Error is :

“Error: The expression on “output “Unknown” (12743)” evaluated to NULL, but the “component “Conditional Split” (12740)” requires a Boolean results.”

Best way to resolve this is by proper NULL handling.
If the condition was cola > colb

then using !ISNULL(cola) && !ISNULL(colb) && cola > colb will handle the cases where either of the columns are NULL

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