I assume you mean how null has to be compared with the IS operator instead of equality? I’ve wondered the same thing, but would making Null==Null have some stra

I assume you mean how null has to be compared with the IS operator instead of equality? I’ve wondered the same thing, but would making Null==Null have some strange consequences for left join operations? You could pretty easily and unintentionally return the Cartesian product of the two tables. Requiring a different operator for comparing to bill prevents that.