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Does join fire less queries than not using joins at all?

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ujjwalak

Post subject: Does join fire less queries than not using joins at all?

Posted: Mon Aug 08, 2005 7:32 pm

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Joined: Fri Jul 15, 2005 6:50 pm
Posts: 3
Location: Bay Area, California,USA

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What is the advantage of using joins in the HQL criteria object?
e.g I have a employee and address objects. An employee can have multiple addresses.

Would the number of queries fired to get the address association be less if I add join in the criteria?

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sven

Post subject: Re: Does join fire less queries than not using joins at all?

Posted: Mon Aug 08, 2005 7:47 pm

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Joined: Thu Dec 04, 2003 12:36 pm
Posts: 275
Location: Bielefeld, Germany

ujjwalak wrote:

Would the number of queries fired to get the address association be less if I add join in the criteria?

This depends on your fetching strategy.

Read 16.5. Dynamic association fetching (documentation):
http://www.hibernate.org/hib_docs/v3/re ... icfetching

As well as 20.1. Fetching strategies (documentation):
http://www.hibernate.org/hib_docs/v3/re ... e-fetching

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