Updating bulk of code in query

If you prefer to attempt to retrieve the record first, you can use When iterating over a model that contains a foreign key, be careful with the way you access values on related models.

Accidentally resolving a foreign key or iterating over a back-reference can cause query.

Instead, you can update the counters atomically using In the above example, we could safely invoke the upsert query as many times as we wanted.SQLite in particular typically has a limit of 999 variables-per-query (batch size would then be roughly 1000 / row length).You can write a loop to batch your data into chunks (in which case it is strongly recommended you use a transaction): Do not do this!JPA 2.1 added a list of nice features to the specification.One of them is the support for bulk update and delete operations in the Criteria API.

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