我有以下查询。
SELECT zip, primary_city, latitude, longitude,
111.045* DEGREES(ACOS(COS(RADIANS(latpoint))
* COS(RADIANS(latitude))
* COS(RADIANS(longpoint) - RADIANS(longitude))
+ SIN(RADIANS(latpoint))
* SIN(RADIANS(latitude)))) AS distance_in_km
FROM zip
JOIN (
SELECT 42.81 AS latpoint, -70.81 AS longpoint
) AS p ON 1=1
ORDER BY distance_in_km
LIMIT 15
当我在sql编辑器中执行上述查询时,我从zip表中获取zip,primary_city,latitude,longitude,distance_in_km。
我需要在我的JPA存储库中使用相同的内容。我尝试使用命名查询,但它显示验证失败的异常。也在我的实体类zip.java中只有 zip,primary_city,纬度,经度(四个属性)。我需要决定如何捕获来自resultset的distance_in_km 请帮助我如何在Spring JPA中实现相同的目标
答案 0 :(得分:0)
首先,您需要设置nativeQuery标志,因为这不是JPQL查询。
当查询没有给出这样的参数时,SQL查询使用:latitude
的命名参数。
您错过了查询第5行的“+”符号:
+"*COS(RADIANS(longpoint) - RADIANS (height))"
+" SIN (RADIANS (latpoint))"
应该是:
+"*COS(RADIANS(longpoint) - RADIANS (height))"
+" + SIN (RADIANS (latpoint))"
您的查询应写为:
SELECT
code,
name,
length,
height,
111.045* DEGREES (ACOS(COS(RADIANS(latpoint)) * COS (RADIANS(length)) * COS(RADIANS(longpoint) - RADIANS (height)) + SIN (RADIANS (latpoint)) *SIN (RADIANS(length)))) As distance_in_km,
latitude AS latpoint,
longitute AS longpoint
FROM place
ORDER BY distance_in_km
LIMIT 5
永远不要低估代码缩进的力量。其他一些开发人员可能需要维护此查询,因此请始终根据需要编写查询。