Spring Data JPA @Query annotation, nativeQuery = true,

我的@Repository:有问题

@Repository
public interface RekvZmRepository extends CrudRepository<RekvalZamestn, RekvalZamestnPk> {
@Query(value = "SELECT z.* FROM rek_zm d INNER JOIN proj_a a ON d.id = a.prj_idcislo"
  + "                                   INNER JOIN proj_e e ON a.id = e.id"
  + "                                   INNER JOIN rekv_z z ON d.id = z.id"
  + "WHERE  d.id = ?1 AND a.id = ?2 AND e.id = ?3", nativeQuery = true)
public List<RekvalZamestn> getRekvOsOnDoh(Long dhzmrk, Long prj, Long prje);
}

当我运行它时，结果是：

org.springframework.dao.InvalidDataAccessResourceUsageException: could not
extract ResultSet; SQL [n/a]; nested exception is
org.hibernate.exception.SQLGrammarException: could not extract ResultSet

当我运行SQL时，它是有效的，所以对我来说，问题似乎不是SQL，而是我的@Query。

您的查询采用单行格式（由于，呃，空格的原因，将多个空格压缩为一个空格），相当于

SELECT z.* FROM rek_zm d INNER JOIN proj_a a ON d.id = a.prj_idcislo INNER JOIN proj_e e ON a.id = e.id INNER JOIN rekv_z z ON d.id = z.idWHERE  d.id = ?1 AND a.id = ?2 AND e.id = ?3

如果像这样将所有字符串连接在一行中，那么很明显，WHERE子句之前缺少一个空格。

假设RekvalZamestn类映射到表rekv_z，则将SELECT z.* FROM更改为SELECT z FROM。

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