Spring Repositories and DATA_FORMAT with nativeQuery=false

Question

I am trying do something super simple but with Spring Repositories somethings is a bit hard. Basically I wanted to group by with DATE_FORMAT, example:

 @Query("SELECT " +
             "    new users.bridge.models.dto.PerformanceDTO(sum(t.gl), sum(t.gl)) " +
             "FROM " +
             "    Transaction t " +
             "GROUP BY DATA_FORMATE(t.createdDate,'%Y-%m-%d')")

But it throws a syntax error. Is there a way to do that with spring repositories? I don't want to use nativeQuery=true flag, otherwise I can not use this syntax

new gara.users.bridge.models.dto.PerformanceDTO(sum(t.gl), sum(t.gl))

UPDATE:

The erros are:

all the java stack is quite big but:

org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: asc near line 1, column 180 [SELECT     new gara.users.bridge.models.dto.PerformanceDTO(sum(t.gl), sum(t.gl),t.createdDate) FROM     gara.model.db.Transaction t GROUP BY DATE_FORMAT(t.createdDate,'%Y-%m-%d') asc] 

Answer 1

If you specify nativeQuery=false (the default) you need to use valid JPQL. JPQL doesn't know the function DATE_FORMAT but you can use the generic FUNCTION function which allows you to call arbitrary SQL functions.

So a group by clause like this should work: GROUP BY FUNCTION('DATA_FORMAT', t.createdDate,'%Y-%m-%d')

Just be aware that such queries aren't portable between databases.

but with Spring Repositories somethings is a bit hard.

You can always fall back on custom method implementations which shouldn't be much harder than implementing your repository yourself in the first place.