Hibernate: ERROR- 列必须出现在 GROUP BY 子句中或在聚合函数中使用

Question

我正在尝试将 SQL 查询更改为 CriteriaBuilder 方式并遇到此错误。

Caused by: org.postgresql.util.PSQLException: 
ERROR: column "lopcoverag0_.slot" must appear in the GROUP BY clause 
or be used in an aggregate function

SQL - 当我在 SQLWorkbench 中执行此查询时，此查询对我有效

select count(*) from (Select distinct slot from lop_coverage 
where pageFamily='Gateway' and currentStatus ='Active' 
and (lop in ("[en_US]","none")) group by creativeID) as totalcount;

致JPA CriteriaBuilder：

        CriteriaBuilder criteriaBuilder = session.getCriteriaBuilder();
        CriteriaQuery<String> criteriaQuery = criteriaBuilder.createQuery(String.class);
        Root<LOPCoverage> root = criteriaQuery.from(LOPCoverage.class);
        criteriaQuery.select(root.get(LOPCoverage_.slot)).distinct(true);

        List<String> lopList = Arrays.asList(new String[]{"none", "[en_US]"});

        Expression<String> lopExpression = root.get(LOPCoverage_.lop);
        Predicate lopINPredicate = lopExpression.in(lopList);

        Predicate andRestriction = criteriaBuilder.and(
                criteriaBuilder.equal(root.get("pageFamily"), pageFamily),
                lopINPredicate);


        criteriaQuery.where(andRestriction).groupBy(root.get("creativeID"));

        System.out.println( session.createQuery(criteriaQuery).list());

这是从休眠日志生成的查询

Hibernate: select distinct lopcoverag0_.slot as col_0_0_ from 
lop_coverage lopcoverag0_ where lopcoverag0_.page_family=? and 
(lopcoverag0_.lop in (? , ?)) group by lopcoverag0_.creative_id

我知道我在 criteriaBuilder 中的代码有错误，有人可以告诉我问题或将我指向正确的位置

Answer 1

选择不同的槽

这不是聚合函数，也不属于group by

要么 select distinct group, slot 或select group, slot ... group by group, slot