Question

I have doubt in access query…

Pls advise is it possible

i have linked the excel file into access,its has some number of columns ..My ques is

for E.g

To retrieve the description and Region column from laptop,Desktop table

i do use below query

SELECT Laptop.[Description], Laptop.[Region] From Laptop 
union SELECT Desktop.[Description], Desktop.[Region] From Desktop

sometimes ..It may not contain Region field, in that time I do use “ ” as Laptop.[Region] or “” as Desktop.[Region]

My quest is

Is there any option like this

SELECT Laptop.[Description], If Laptop.[Region]=avairable 
     then Laptop.[Region] else “” as [Region] from Laptop; 

or any way to skip from error…

Please help me in this …THx in advance

Doubt:

To be clear

If desktop table has description and region Column ..

Description Region
Saran       east
Sathish     north 
sathy       west

And

Laptop has Desktop table has description and Cost …

Description  Cost
asdf         23
dkasfjasd    34
flkasdf      55

Select Laptop.[Description], NZ(Laptop.[Region], "NA") as [Region] 
from Laptop 
UNION 
SELECT Desktop.[Description], NZ(Desktop.[Region], "NA") as [Region] 
FROM Desktop;

Will it return this result ?

I can’t run this because I had some access issue

Description  Region
asdf              
dkasfjasd   
flkasdf 
Saran        east
Sathish      north 
sathy        west

Answer 1

you can use switch case for this query but in mS-acess its not supported but the other way out of doing it in access is use of iif() here I am giving you a generic example you can easily convert this in your actual query.

IIf(expr, truepart, falsepart)

 SELECT  IIF(IsNull(Laptop.[Region])," ",Laptop.[Region]) as region
FROM Laptop ;