## Why is My Spring Data JPA @Query Update Not Reflecting in the Entity?

Not Updating Using Spring Data JPA @Query

In Spring Data JPA, the provided update query fails to update the entity, resulting in a test failure.

Despite implementing the required modifications to the query to use parametrized values, the updated fields remain unaffected, retaining their initial values. Adding a flush operation right before the find operation doesn't resolve the issue either.

Upon examining the generated SQL statement, you notice that the update query is correctly executed, but the query retrieving the modified entity seems to be ignored. This suggests a potential caching issue.

However, when adding calls to other finders, the updated values are reflected in the retrieved objects. This behavior is inconsistent and unexpected.

Additionally, the SQL statement retrieving the modified entity includes a limit 2 clause, though it's assumed that Spring Data should always use a limit 1 clause when returning a single object.

Interestingly, when executing the generated SQL statements manually in a MySQL client, the logic works flawlessly, raising the question of why this behavior is not consistently reflected at the Java level.

The root cause of this issue lies in the default behavior of the EntityManager, which does not flush changes automatically. To resolve it, the clearAutomatically option should be enabled in the @Modifying annotation, ensuring that changes are flushed immediately after the update query.

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