これには合体を使用します: http://msdn.microsoft.com/en -us / library / ms190349.aspx
update Person
set Car = coalesce(@Car, Car), HairColour = coalesce(@HairColour, HairColour)
これには合体を使用します: http://msdn.microsoft.com/en -us / library / ms190349.aspx
update Person
set Car = coalesce(@Car, Car), HairColour = coalesce(@HairColour, HairColour)