Postgres查詢到JPA轉換

Question

我有一個postgres查詢，我想用JPA執行。

任何一個可以告訴我如何在JPA糾正下面的查詢

SELECT (
     SELECT COUNT(*) 
     FROM "RECEIPT" Where "STATUS"='1' 
     ) AS count1, 
     (
     SELECT COUNT(*) 
     FROM "RECEIPT" Where "STATUS"='1' 
     ) AS count2; 

這將返回

count1 count2 
11  11 

在JPA我試過以下。

Query query = em.createQuery("SELECT (SELECT count(*) FROM SMSReceipt Where status='1') AS count1,(SELECT count(*) FROM SMSReceipt Where status='8') AS count2 "); 

但是，這是行不通的

請建議我該怎麼辦呢

Answer 1

您需要使用createNativeQuery()方法來運行普通的SQL

Query query = em.createNativeQuery("SELECT (SELECT count(*) FROM SMSReceipt Where status='1') AS count1,(SELECT count(*) FROM SMSReceipt Where status='8') AS count2 "); 

createQuery()用於運行JPQL 。

另請參閱 - JPA's EntityManager createQuery() vs createNamedQuery() vs createNativeQuery()