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Inner Join and unique results

Wojciech Sielski
Greenhorn

Joined: Dec 18, 2012
Posts: 7
Hi,

I'm trying to retrieve data from database using criteriabuilder. It's working great, query is almost perfect... almost. Unfortunately Java don't want me to use group by or distinct as a result of my query. How to make Java retrieve only unique records? My code is here:



Any idea?
James Sutherland
Ranch Hand

Joined: Oct 01, 2007
Posts: 553
What error are you getting?

See,
http://en.wikibooks.org/wiki/Java_Persistence/Criteria#Group_By

For Criteria groupBy examples.

TopLink : EclipseLink : Book:Java Persistence : Blog:Java Persistence Performance
Wojciech Sielski
Greenhorn

Joined: Dec 18, 2012
Posts: 7
There was no error. Just duplicated records. But now I've found bug. I was creating query before I've set distinct parameter to true.
 
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