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我想在作为 NamedQuery 的 hasrsine 公式查询下运行，但我不知道如何更正它。

set @orig_lat = 37.334542;
set @orig_lon = -121.890821;
set @dist = 10;

select  *,
        3956 * 2 * ASIN(SQRT(POWER(SIN((@orig_lat - abs(mlatitude)) * pi() / 180 / 2), 2) 
          + COS(@orig_lat * pi() / 180) * COS(abs(mlatitude) * pi() / 180) * POWER(SIN((@orig_lon - mlogitude) * pi() / 180 / 2), 2))) as distance
from user_gps_location
having distance < @dist
ORDER BY distance

我将此查询运行到 mysql 中，它对我来说很好，但是当我在下面的查询中写为 NamedQuery 时，它给了我错误：

UserGpsLocation users = (UserGpsLocation)em.createQuery("select (3956*2*ASIN(SQRT(POWER(SIN((?1-abs(u.mlatitude))*pi()/180/2),2)+COS(?1*pi()/180) * COS(abs(u.mlatitude)* pi()/180) *POWER(SIN((?2 -u.mlogitude)* pi()/180/2),2)))) as distance from UserGpsLocation u having distance < :dist ORDER BY distance")
      .setParameter(1, mlatitude)
      .setParameter(2, mlogitude)
      .setParameter("dist", 10)
      .getResultList();

例外： 

javax.servlet.ServletException: java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager: 
Exception Description: Syntax error parsing the query [select (3956*2*ASIN(SQRT(POWER(SIN((?1-abs(u.mlatitude))*pi()/180/2),2)+COS(?1*pi()/180) * COS(abs(u.mlatitude)* pi()/180) *POWER(SIN((?2 -u.mlogitude)* pi()/180/2),2)))) as distance from UserGpsLocation u having distance < :dist ORDER BY distance], line 1, column 19: unexpected token [(].
Internal Exception: NoViableAltException(83@[()* loopback of 383:9: (d= DOT right= attribute )*])

谁能帮助我并告诉我它有什么问题？

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1 回答 1

0

终于能找到解决办法了。我使用 createNativeQuery 而不是 createQuery，这解决了我的问题。

于 2012-07-31T22:26:17.523 回答