[feanaro]

So of the three major SQL implementations, you have one of them following the results of the settled debate, one of them being an exception and one of them huffling glue (whatever that means). In addition, there's a language exception even in the settled group, which you have to handwave away.

Sounds pretty unsettled to me.

[irrational]

Oracle considers null to be equal to empty string.

[mike_hock]

That is truly huffing glue.