MS ACCESS VBA ORDER BY CASE When

问题

I a lot of orders in my Factory.

Our regular time to finish our job is 10 days but sometimes we promise to the customer that it will be shorter (lets assume 5 days).

I tried to build an SQL that order by the minimum Date of the two columns:

SELECT id, Status, DeliveryDate, PromiseDate
FROM CustomerOrderT
WHERE Status > 2 and Status <7 
ORDER BY CASE WHEN DeliveryDate > PromiseDate then PomiseDate ELSE DeliveryDate END;

But i get a problem message from ms access. maybe write it correctly The problem massage attached

Thank you

回答1:

In MS Access you have to use IIF instead of Case like this:

SELECT id, Status, DeliveryDate, PromiseDate
FROM CustomerOrderT
WHERE Status > 2 and Status <7 
ORDER BY IIF(DeliveryDate > PromiseDate, PromiseDate, DeliveryDate);

来源：https://stackoverflow.com/questions/37695916/ms-access-vba-order-by-case-when