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SQL to Oracle IIF statement

Greetings experts,

I have been trying to convert the following access SQL statement to it's oracle counterpart:

IIf([VZ_SVC_TYPE]="DS0",4.99,IIf([VZ_SVC_TYPE]="DS1",3.99,IIf([VZ_SVC_TYPE]="DS3+",2.99))) AS [On Time Target], IIf([MTTR]<=[On Time Target],"Met","Missed") AS OTD

So far I am not having much luck, I am on the DECODE path but perhaps I am getting the syntax wrong.

Your help is appreciated.

Thanks

softwareservice

IIF is actually no SQL or T-SQL, but VBA. On SQL Server / T-SQL and ORACLE you have the CASE WHEN syntax:

SELECT 'column1',
       case
       when x = 1 then 'one'
       when x = 2 then 'two'
       when x = 3 then 'three' 
       else 'something else'
       end,
       'column3'
FROM ...

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Sean Stuber

DECODE(vz_svc_type,'DS0',4.99, 'DS1',3.99, 'DS3+',2.99) as on_time_target,
CASE WHEN mttr <= DECODE(vz_svc_type,'DS0',4.99, 'DS1',3.99, 'DS3+',2.99)
then 'Met'
else 'Missed'
end) as otd

Kevin Cross

I am not certain you can reference the aliased column by name in Oracle without having to use a query of a query of pasting the entire case when statement over again, but here is what it would look like:

SELECT case when [VZ_SVC_TYPE]='DS0' then 4.99 when [VZ_SVC_TYPE]='DS1' then 3.99 when [VZ_SVC_TYPE]='DS3+' then 2.99 end AS [On Time Target]
, case when [MTTR] <= [On Time Target] then 'Met' else 'Missed' end AS OTD

awking00

I think sdstuber accidentally put a parenthesis after the end keyword in the case statement. Other than that, that's your answer.

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Sean Stuber

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Kevin Cross

I wasn't sure about the DECODE syntax myself, but I have seen that used to simulate what I would have done in T-SQL as CASE [VZ_SVC_TYPE] WHEN 'DS0' THEN 4.99 ... It is a much simpler switch case statement.

As sdstuber is showing, think hunch that you can't use column name defined in same query in formula, so you have to repeat the case or decode statement in his case.

jclem1

ASKER

Excellent sdstuber, thank you much that was my answer!

Kevin Cross

Very nice, sdstuber!

Sean Stuber

and you could do both of them with CASE if you wanted....

CASE
   WHEN vz_svc_type = 'DS0' THEN 4.99
   WHEN vz_svc_type = 'DS1' THEN 3.99
   WHEN vz_svc_type = 'DS3+' THEN 2.99
END AS on_time_target, 
CASE
   WHEN mttr <= CASE
                   WHEN vz_svc_type = 'DS0' THEN 4.99
                   WHEN vz_svc_type = 'DS1' THEN 3.99
                   WHEN vz_svc_type = 'DS3+' THEN 2.99
                END
        THEN 'Met'
        ELSE 'Missed'
END AS otd

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Sean Stuber

glad I could help

jclem1

ASKER

My actual query for reference:

select trunc(CLOSED, 'Mon') "Month", SRC_SYS, Report#, VZ_SVC_TYPE, repo_type, Trbl_code, sum(resp_dur/60) MTTR,
decode(VZ_SVC_TYPE,'DS0',4.99,'DS1',3.99,'DS3+',2.99) On_Time_Target,
Case WHEN (resp_dur/60) <=decode(VZ_SVC_TYPE,'DS0',4.99,'DS1',3.99,'DS3+',2.99) then'Met' else 'Missed' end OTD
From mtc.MTTR_2007
where trunc(CLOSED, 'Mon') >='01-JAN-2007'
and trunc(CLOSED)<= '31-DEC-2007'
Group by trunc(CLOSED, 'Mon'), SRC_SYS, Report#, VZ_SVC_TYPE, repo_type, Trbl_code,resp_dur