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所有查詢需要實現像SQL查詢:如何寫聯盟查詢DSL
SELECT A.class, A.section
FROM
STUDENT A
INNER JOIN DEPARTMENT on A.student_id = B.id
WHERE DEPT_NBR is not null
UNION ALL
SELECT A.class, A.section
FROM
TEACHER A
INNER JOIN DEPARTMENT on A.teacher_id = B.id
WHERE DEPT_NBR is not null
我怎麼能寫與QueryDSL這樣的說法? (我沒有使用任何JPA)。任何幫助/提示非常感謝!