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As shown in the user question it is hard to compose JPA Criteria parts into a bigger query. My suggestion is to add the following to BlazeCriteriaQuery:
It would be super helpful if this apply functionality was available more generically. I have a requirement to support a filter on an analytic function - but these window functions aren’t supported in the where clause. The work around is either a select from a CTE or a sub query. It would be helpful if you already have a criteria query to be able to pass it into a fromWith or fromSubquery. So we end up with either:
select * from (…) a where a.rank = 1
or
with a as (…) select * from a where a.rank =1
In this example rank is a window function in the CTE or sub query of the form “rank() over (partition by … order by …) as rank”
When you already have a JPA criteria query but simply wish to wrap it in a parent select like above, I cannot see an easy way to achieve this without rebuilding the whole query from scratch using the BlazeCriteriaBuilder. Any help appreciated on this request!
As shown in the user question it is hard to compose JPA Criteria parts into a bigger query. My suggestion is to add the following to
BlazeCriteriaQuery
:This will allow users to compose a query like this:
To fully solve the problem for the user we'd also need #1556 though.
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