# Performance question with Blaze Persistence (subqueries)

**URL:** <https://discourse.hibernate.org/t/performance-question-with-blaze-persistence-subqueries/11989>\
**Category:** Hibernate ORM\
**Created:** [November 25, 2025, 10:50am UTC](https://discourse.hibernate.org/t/performance-question-with-blaze-persistence-subqueries/11989 "2025-11-25T10:50:51Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![beikov](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.hibernate.org/beikov/32/258_2.png) [@beikov](https://discourse.hibernate.org/u/beikov)\
**Post date:** [December 9, 2025, 4:38pm UTC](https://discourse.hibernate.org/t/performance-question-with-blaze-persistence-subqueries/11989/21 "2025-12-09T16:38:41Z")

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Looking at the source code, I can’t figure out why it would be empty at that point though if no exception is thrown in the `try` block. Since the query you posted with the model I derived does not fail in that same way, I can’t really understand what is going on.  
I hope you can provide a reproducer somehow so I can give a deeper look.

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