Question

I’m looking to add a conditional IIf or CASE to a WHERE clause in Access SQL to add an either/or condition based upon a passed value. I’ve seen a couple of examples on the site, but they were a little different and I have struggled to get the code to work in my case. The code:

SELECT * FROM incHC 
WHERE 
incHC.repdte=(SELECT Max(repdte) AS maxDt FROM bYrs) AND 
incHC.asset>0 AND 
incHC.eq2<>0 AND 

(
CASE WHEN recType="inst" THEN 
  incHC.orphan=0
ELSE
  incHC.orphan<=1
END
)

Any help is much appreciated.

Answer 1

Unless I am missing something with your query, you should be able to do this without a CASE:

SELECT * 
FROM incHC 
WHERE incHC.repdte=(SELECT Max(repdte) AS maxDt FROM bYrs) 
    AND incHC.asset>0 
    AND incHC.eq2<>0 
    AND
    (
        (
            recType="inst" 
            AND incHC.orphan=0
        )
        OR
        (
            recType<>"inst"
            AND incHC.orphan<=1
        )
    )