HHH-18605 fix some minor defects in Hibernate Query Language doc

[NathanQingyangXu]

https://hibernate.atlassian.net/browse/HHH-18605

[NathanQingyangXu]

not 100% sure, but seems usually having clause taps into aliases in the projection clause without duplication

[beikov]

Group by and order by clauses support using aliases, but other clauses don't.

[gavinking]

I just ran this code on postgres and it worked:

			sessionFactory.inSession(s -> s.createSelectionQuery(
					"select sum(book.quantity), year(book.publicationDate) from Book book " +
					"group by year(book.publicationDate) " +
					"having year(book.publicationDate) > 2003 " +
					"   and sum(book.quantity) > 0").getResultList());

[NathanQingyangXu]

I reverted it back BEFORE I saw your comment. I googled further (e.g. https://stackoverflow.com/questions/72314037/how-can-i-use-an-alias-with-having-clause), so it seems the feature might not be supported by all DBs?
For that reason, I refrained from reverting back what I reverted.

[gavinking]

Lots of good catches here, @NathanQingyangXu, but a couple of changes in comments.

[gavinking]

I just ran this code on postgres and it worked:

			sessionFactory.inSession(s -> s.createSelectionQuery(
					"select sum(book.quantity), year(book.publicationDate) from Book book " +
					"group by year(book.publicationDate) " +
					"having year(book.publicationDate) > 2003 " +
					"   and sum(book.quantity) > 0").getResultList());

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[beikov]

Please squash all commits, then this can go in IMO.

[gavinking]

Thanks, @NathanQingyangXu! (I squashed it for you.)

[NathanQingyangXu]

Thanks, @NathanQingyangXu! (I squashed it for you.)

thanks! Glad I helped. As a community contributors, usually I could enjoy more on such doc polishing tickets so core team developers could focus on more important stuff.