Be aware that IsNull and Coalesce have differences in the way statistics may be calculated (at least in SQL 2012)
$0The Isnull option returned an estimate of 300 rows, whereas coalesce estimated 11830.$0
$0The actual result was 13993 rows$0
$0$0
$0
$0Whilst in this example it has no effect, the statistics may affect other parts of a more complex query.$0
$0$0
$0
$0
$0select count(*) from jvd where$0
$0isnull(Actual, Estimate)>='1900-01-01 00:00:00.000' $0
$0AND isnull(Actual, Est
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