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Case in where clause using in

YVR33 asked
Last Modified: 2012-02-10
Trying to use the following in a where clause.  Getting message: "An expression of non-boolean type specified in a context where a condition is expected, near.."
The logic should be to use the value in Current name unless Modified is valued then use Modified.

case when o.name in ('CT' ,'XR' ,'NM' ,'NM C',' PET',' US', 'US B','IR' ,'MR')then o.name
else o.modifier end
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Simone BBI & Reporting Analyst

You can't use it on its own in a Where clause. You'll have to write the Where so that the result is true or false. For example:

Select * from TableName o
where case when o.name in ('CT' ,'XR' ,'NM' ,'NM C',' PET',' US', 'US B','IR' ,'MR')then o.name
else o.modifier end = 'CT'


ok, so can I use something like this:

case when o.modifier is NULL  
        then o.name in ('CT','XR','NM','NM Cardiac'
        ,'PET','US','US Breast','IR','MR')else
 o.modifier end
BI & Reporting Analyst
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Simone BBI & Reporting Analyst

Of course, you can use any valid operator, it doesn't have to be "="


Thanks, I have a better understanding now.
Simone BBI & Reporting Analyst

You're welcome!

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