> I haven' tried this, but can't you just write
>
> where (H.Haul_Code=:supphaul or :supphaul is null)
> and A.code=H.haul_code
>
> and then just pass NULL to :supphaul if you want all records?

Markus, this is the "usual workaround", but has the plan problems
I described earlier.

Martijn Tonies
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