JPA JPQL Bulk Data OperationsIn the previous section, we fetched single column only. Now, we will learn how to handle bulk data and perform corresponding operations. JPQL Bulk Data ExampleIn this example, we will take a basic entity class (in this case StudentEntity.java) and perform different operations on it.
StudentEntity.java
Persistence.xml
JPQL FetchHere, we will fetch all the records from the database. FetchData.java Output: JPQL UpdateHere, we will update the records in database. UpdateData.java Output: After the execution of the program, the following student table generates under MySQL workbench. To fetch data, run select * from student in MySQL. JPQL DeleteHere, we will delete the particular records from database. DeleteData.java Output: After the execution of the program, the following student table generates under MySQL workbench. To fetch data, run select * from student in MySQL.
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