[Querydsl] 검색 조건 쿼리

# 기본 검색 쿼리

@Test
public void search(){
    Member findMember = queryFactory
            .selectFrom(member)
            .where(member.username.eq("member1")
                    .and(member.age.eq(10)))
            .fetchOne();

    assertThat(findMember.getUsername()).isEqualTo("member1");
}

 

• 검색 조건은 .and(), .or() 를 메서드 체인으로 연결할 수 있다.
• 참고 : select, from 을 selectFrom 으로 합칠 수 있다.

 

# JPQL 이 제공하는 모든 검색 조건 제공

member.username.eq("member1") // username = 'member1'
member.username.ne("member1") //username != 'member1'
member.username.eq("member1").not() // username != 'member1'
 
member.username.isNotNull() //이름이 is not null

member.age.in(10, 20) // age in (10,20)
member.age.notIn(10, 20) // age not in (10, 20)
member.age.between(10,30) //between 10, 30
 
member.age.goe(30) // age >= 30
member.age.gt(30) // age > 30
member.age.loe(30) // age <= 30
member.age.lt(30) // age < 30
 
member.username.like("member%") //like 검색 
member.username.contains("member") // like ‘%member%’ 검색 
member.username.startsWith("member") //like ‘member%’ 검색

 

 

# AND 조건을 파라미터로 처리

@Test
public void searchAndParam(){
    List<Member> result1 = queryFactory
            .selectFrom(member)
            .where(member.username.eq("member1"),
                    member.age.eq(10))
            .fetch();

    assertThat(result1.size()).isEqualTo(1);
}

 

• where() 에 파라미터로 검색조건을 추가하면 AND 조건이 추가된다.