我想這個代碼如何在JPQL中使用in子句?
Query q = em.createQuery("SELECT c FROM Category c where c.id in 1");
,但我有這個錯誤
An exception occurred while creating a query in EntityManager:
Exception Description: Syntax error parsing [SELECT c FROM Category c where c.id in 1].
[31, 40] The expression is not a valid conditional expression.
是什麼問題?