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using min function in ejb ql of foreign key

 
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SELECT MIN(o.orgUnitId) FROM ProcessedOrganization o
This is query i am using ,in this case

ProcessedOrganization Entity have orgUnitId as primaryKey as well as
foreign key reference.
when i am going to generate rmic for this Ejbql then it showing error
Invalid SELECT containing either expression,parameter,or multiple elements.
I am using ejb 2.1 so there is no problem of version
can u help me?
 
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Hi!

Can u plz post the exact stack trace tht u received?
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