Theoretically one could do that same processing by picking various obscure
dates. Well, other than that first case...
Striking this
when DateShip < 0 then /* Projected Ship Date */
char(DateOrdr - DateShip days, ISO)
(which a data entry routine could automatically convert to a real date
anyway.)
Leaves you with this:
case
when DateShip = '1492-01-01' then /* No Ship Date needed */
'Customer Pick Up'
when DateShip = '1776-07-04' then /* Backordered */
'Back Ordered '
when DateShip < current date then /* Date missed */
'*** Overdue! ***'
when DateShip IS NULL then /* No Date assigned */
'** Incomplete **'
else
char(DateShip)
end as ShipRule
The obscure date function is no different than certain numbers having a
certain meaning.
Rob Berendt
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