IFNULL equivalent in Hibernate Query Language?

Question

I\'m trying to write an HQL query which will calculate an average rating for an item. I want the query to return 0 instead of null when there are no rating for a given item - so

Answer 1

COALESCE is the official equivalent.

It returns the first non-null of its arguments.

Example:

    COALESCE(id_pati, 0)

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