} //去重publicSpecification<AttendanceRuleTypeItem>distinct() {return(Root<AttendanceRuleTypeItem> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder) ->{ criteriaQuery.distinct(true);returncriteriaQuery.getRestriction(); }; }
} //去重publicSpecification<AttendanceRuleTypeItem>distinct() {return(Root<AttendanceRuleTypeItem> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder) ->{ criteriaQuery.distinct(true);returncriteriaQuery.getRestriction(); }; }
无动态条件:使用 JPA Repository、QueryDSL均可。 多表:有无动态条件均使用 QueryDSL JpaSpecificationExecutor也可以实现动态条件查询,但是使用起来过于繁琐,不推荐使用。
在经典的ERC-20场景中,如果用户想要授权给第三方账户或者智能合约进行转账操作,那么需要通过两个事务来...
用于查询最新记录的JPA规范谓词 使用@Toru建议的查询 SELECT * FROM rules r WHERE name IN (?1) AND key IN (?2) AND activated_at = ( SELECT max(avtivated_at) from rule r2 where r2.name = r.name and r2.key = r.key and activated_at < NOW() ) In specification public class Specs ...
Dimitri opened DATAJPA-1573 and commented I have this code: public Predicate toPredicate(Root<User> root, CriteriaQuery<?> query, CriteriaBuilder builder){ ... query.groupBy(root.get("id")); ... } Method Repository.count(specification) ignores GROUP BY and returns wrong result, while Reposit...
Group by trunced date in JPAAsk Question Asked 6 years, 5 months ago Modified 6 years, 5 months ago Viewed 3k times Report this ad 2 I need help! I need to build specification for SELECT date_trunc('day', start_time) FROM Example GROUP BY date_trunc('day', start_time) (Postg...
JPA spring数据连接规范 我已经创建了一些org.springframework.data.jpa.domain.Specifications.现在,我正在创建一个查询,在该查询中,我希望在我连接到的表上使用规范。但是为了使用一个Specification,我需要一个Root,但是Join给了我一个Join对象。有没有办法把Join对象转换成根对象?或者,有没有类似于Specification的东西...
SELECT country, state, Count(*) FROM population_table GROUP BY country, state But I want to do this using JPA Specification. How can I achieve this using JPA Specification in spring boot? java sql sql-server spring-boot jpa Share Follow edited Apr 23, 2020 at 19:35 asked Apr 23,...
? 1 SELECT e.name FROM Employee e ORDER BY e.address.postalCode [e.name = String, e.address.postalCode = int where address is an "embeddable class" inside Employee object]. The same problem i found with GROUP BY clause as well. I may be doing something wrong because specification and...