Room DAO Order By ASC or DESC variable

Question

I\'m trying to make a @Query function in my @Dao interface which has a boolean parameter, isAsc to determine the order:

@Q         


        

Answer 1

Create two queries, one with ASC and one with DESC.

@Query("SELECT * FROM Persons ORDER BY last_name ASC")
List getPersonsSortByAscLastName();

@Query("SELECT * FROM Persons ORDER BY last_name DESC")
List getPersonsSortByDescLastName();