How do I call a user defined sql function from springboot?

Question

I'm trying to call a user defined function from PLSQL database, it takes several variables and return a single float.

I've tried code like this:

@Query(nativeQuery = true, value = "SELECT package.function("variables: 
value")
float getFuction(@Param("value") String value);

This shows an error saying "FROM keyword was not found where expected.

Answer 1

I think that it should be like that (i do not have chance to check):

@Query(nativeQuery = true, value = "SELECT package.function(:value) FROM dual")
float getFuction(@Param("value") String value);

It is based on this answer

Answer 2

The solution:

@Query(nativeQuery = true, value = "SELECT package.function("variables: value") FROM dual")
float getFuction(@Param("value") String value);