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need help in updating data using hibernate hql

 
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I have a table let us say userdetails with fields companyid,employeeid,password,empname etc
here companyid,employeeid are composite keys and employeeid can be editable

i have created the required hibernate pojo class fro this table...

how to write update query for updating employeeid in the database?

for example ,

update userdetails set employeeid='new_value' where companyid='some_company' and employeeid='old_value'

i can do this by using SQLQuery object.....

how can i do this using hql?
 
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