Hibernate分离查询作为条件查询的一部分

java专家可以帮助我编写分离查询作为以下SQL语句的条件查询的一部分。

select A.* FROM AETABLE A where not exists ( select entryid FROM AETABLE B where B.classpk = A.classpk and B.userid = A.userid and B.modifiedDate > A.modifiedDate ) and userid = 10146 

Answer 1

您需要编写相关的子查询 。 假设属性/类名与上面的列/表名相匹配：

 DetachedCriteria subquery = DetachedCriteria.forClass(AETable.class, "b") .add(Property.forName("b.classpk").eqProperty("a.classpk")) .add(Property.forName("b.userid").eqProperty("a.userid")) .add(Property.forName("b.modifiedDate").gtProperty("a.modifiedDate")); Criteria criteria = session.createCriteria(AETable.class, "a") .add(Property.forName("userid").eq(new Integer(10146))) .add(Subqueries.notExists(subquery); 

Answer 2

只是上述查询的一个补充。 如果entryid不是主键，那么您需要添加投影。

DetachedCriteria subquery = DetachedCriteria.forClass(AETable.class, "b") .add(Property.forName("b.classpk").eqProperty("a.classpk")) .add(Property.forName("b.userid").eqProperty("a.userid")) .add(Property.forName("b.modifiedDate").gtProperty("a.modifiedDate")) .add(setProjection(Projections.property("entryId")); // Additional projection property Criteria criteria = session.createCriteria(AETable.class, "a") .add(Property.forName("userid").eq(new Integer(10146))) .add(Subqueries.notExists(subquery);
DetachedCriteria subquery = DetachedCriteria.forClass(AETable.class, "b") .add(Property.forName("b.classpk").eqProperty("a.classpk")) .add(Property.forName("b.userid").eqProperty("a.userid")) .add(Property.forName("b.modifiedDate").gtProperty("a.modifiedDate")) .add(setProjection(Projections.property("entryId")); // Additional projection property Criteria criteria = session.createCriteria(AETable.class, "a") .add(Property.forName("userid").eq(new Integer(10146))) .add(Subqueries.notExists(subquery);