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 Post subject: What kind of objects do inner joins return?
PostPosted: Wed Jun 27, 2012 11:11 am 
Newbie

Joined: Wed Jun 27, 2012 10:49 am
Posts: 3
Hello,

I am using the following HSQL query in a Spring project

select e.id, c.firstName, c.lastName, c.email, max(e.creationDate)
from Enquiry as e inner join e.theCustomer as c
group by e.id, c.firstName, c.lastName, c.email,
e creationDate.

which returns a list of java objects. Unfortunately, I am not sure
what those objects are: Enquiries, Customers, or other objects?

How can I tell?

Many thanks.

Philroc


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 Post subject: Re: What kind of objects do inner joins return?
PostPosted: Wed Jun 27, 2012 12:05 pm 
Newbie

Joined: Wed Apr 08, 2009 6:45 am
Posts: 5
The fact that it is an inner join is irrelevant.

The select clause tells you what objects are being returned:

select e.id, c.firstName, c.lastName, c.email, max(e.creationDate)

Each row of the result set will be an array of objects, which will be typed according to the properties you have specified in the clause above.

eg, e.id might be an Integer, c.firstName will probably be a String, etc.

HTH

Jordan.


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 Post subject: Re: What kind of objects do inner joins return?
PostPosted: Wed Jun 27, 2012 12:55 pm 
Newbie

Joined: Wed Jun 27, 2012 10:49 am
Posts: 3
Many thanks, gusgorman. That's exactly what I needed to know.


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