Nulls and the MERGE statement: I need to set a value to infinity. How?

Question

In SQL Server 2008, I\'m using MERGE. Everything is fine except that I have 2 nullable columns. If I pass a null value and the target isn\'t null, MERGE doesn\'t see a diffe

Answer 1

WHEN MATCHED AND tgt.c <> src.c OR tgt.c IS NULL AND src.c IS NOT NULL OR tgt.c IS NOT NULL AND src.c IS NULL