Postgres查询到JPA转换

Question

我有一个postgres查询，我想用JPA执行。

任何一个可以告诉我如何在JPA纠正下面的查询

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

这将返回

count1 count2 
11  11 

在JPA我试过以下。

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，这是行不通的

请建议我该怎么办呢

Answer 1

您需要使用createNativeQuery()方法来运行普通的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()用于运行JPQL 。

另请参阅 - JPA's EntityManager createQuery() vs createNamedQuery() vs createNativeQuery()