composite primary Key with @Idclass in spring data JPA inserts new record instead of updating when call save method of Spring data JPA

Question

when I try to call the save method on a table which is having composite primary keys only, it always inserts a new record when one to values is changed. how can I achieve an update instead of a new record in DB using spring data JPA?
My table with composite keys is :

Table1:
    private int clientTypeId;
    private int clientId;

question from:https://stackoverflow.com/questions/65897838/composite-primary-key-with-idclass-in-spring-data-jpa-inserts-new-record-instea

Answer 1

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