休眠准则，以找到具有独特价值的计数

问题描述

我有以下sql查询，我需要获取相应的休眠条件查询

I have the following sql query ,i need to get the corresponding hibernate criteria query

SELECT COUNT(DISTINCT employee_id) FROM erp_hr_payment WHERE payment_id IN(
SELECT payment_id FROM erp_hr_payment_collection WHERE payment_id IN(
SELECT payment_id FROM erp_hr_payment_collection WHERE payment_id IN(
SELECT payment_id FROM erp_hr_payment
 WHERE for_month BETWEEN '2013-04-01' AND '2014-03-31' AND arrear_flag=0
) AND element_name='EPF' ) AND element_name='EPFV');

推荐答案

从大多数内部查询开始，创建相对的DetachedCriteria并使用Subqueries.in()附加到外部查询.
对于count(distinct)，请使用Projections.countDistinct(propertyName).享受.

Begin from most inner query create relative DetachedCriteria and attach to outer query using Subqueries.in().
For count(distinct) use Projections.countDistinct(propertyName).Enjoy.

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