如何在本地spring-data @Query中使用命名参数？

Question

I'm trying to set up a db query using spring-data-jpa and a native query for a postgres database. But the following does not work. Why?

@Query(value = "SELECT reltuples::bigint AS estimate FROM pg_class WHERE oid = 'public.my_table'::regclass", nativeQuery = true)
public int count();

Result:

java.lang.IllegalArgumentException: org.hibernate.QueryException: Not all named parameters have been set: [:bigint, :regclass;] 

Answer 1

找到它::必须像\\\\:\\\\:一样被转义\\\\:\\\\: