spring data jpa 查询方法有多种，其中最快捷和方便的是方法名查询，命名规则如下
| 关键字 | 例子 | JPQL语句 |
|---|---|---|
AND |
findByLastnameAndFirstname |
where x.lastname = ?1 and x.firstname = ?2 |
Or |
findByLastnameOrFirstname |
where x.lastname = ?1 or x.firstname = ?2 |
Between |
findByStartDateBetween |
where x.startDate between ?1 and ?2 |
LessThan |
findByAgeLessThan |
where x.age < ?1 |
GreaterThan |
findByAgeGreaterThan |
where x.age > ?1 |
After |
findByStartDateAfter |
where x.startDate > ?1 |
Before |
findByStartDateBefore |
where x.startDate < ?1 |
IsNull |
findByAgeIsNull |
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(parameter bound with appended %) |
EndingWith |
findByFirstnameEndingWith |
where x.firstname like ?1(parameter bound with prepended %) |
Containing |
findByFirstnameContaining |
where x.firstname like ?1(parameter bound wrapped in %) |
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> age) |
where x.age not in ?1 |
True |
findByActiveTrue() |
where x.active = true |
False |
findByActiveFalse() |
where x.active = false |
