[JPA] Spring Data JPA - Query Method / 쿼리 메소드 / 간단한 쿼리는 쿼리 메소드 사용하면 편리

동적인 조건으로 조회를 하거나(ex.검색쿼리) 복잡한 쿼리를 해야한다면 Querydsl을 추천

 

하지만 단순한 crud라면 쿼리 메소드를 이용하면 매우 간단 편리하며 생산성을 올릴 수 있다!

쿼리메소드 키워드 표

Keyword	Sample	JPQL snippet
Distinct	findDistinctByLastnameAndFirstname	select distinct …​ where x.lastname = ?1 and x.firstname = ?2
And	findByLastnameAndFirstname	… where x.lastname = ?1 and x.firstname = ?2
Or	findByLastnameOrFirstname	… where x.lastname = ?1 or x.firstname = ?2
Is, Equals	findByFirstname, findByFirstnameIs, findByFirstnameEquals	… where x.firstname = ?1
Between	findByStartDateBetween	… where x.startDate between ?1 and ?2
LessThan	findByAgeLessThan	… where x.age < ?1
LessThanEqual	findByAgeLessThanEqual	… where x.age <= ?1
GreaterThan	findByAgeGreaterThan	… where x.age > ?1
GreaterThanEqual	findByAgeGreaterThanEqual	… where x.age >= ?1
After	findByStartDateAfter	… where x.startDate > ?1
Before	findByStartDateBefore	… where x.startDate < ?1
IsNull, Null	findByAge(Is)Null	… where x.age is null
IsNotNull, NotNull	findByAge(Is)NotNull	… where x.age not null
Like	findByFirstnameLike	… where x.firstname like ?1
NotLike	findByFirstnameNotLike	… where x.firstname not like ?1
StartingWith	findByFirstnameStartingWith	… where x.firstname like ?1 (파라미터 뒤에 % 붙이기)
EndingWith	findByFirstnameEndingWith	… where x.firstname like ?1 (파라미터 앞에 % 붙이기)
Containing	findByFirstnameContaining	… where x.firstname like ?1 (파라미터 %로 감싸기)
OrderBy	findByAgeOrderByLastnameDesc	… where x.age = ?1 order by x.lastname desc
Not	findByLastnameNot	… where x.lastname <> ?1
In	findByAgeIn(Collection<Age> ages)	… where x.age in ?1
NotIn	findByAgeNotIn(Collection<Age> ages)	… where x.age not in ?1
True	findByActiveTrue()	… where x.active = true
False	findByActiveFalse()	… where x.active = false
IgnoreCase	findByFirstnameIgnoreCase	… where UPPER(x.firstname) = UPPER(?1)

 

[참고 - Spring Data JPA 참조 문서]

https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#jpa.query-methods

Spring Data JPA - Reference Documentation