java - Float in JPQL query -

i have following method:

public book findbookbytitleandversion(string title, float version) {     typedquery<book>query = em.createquery("select b book b b.title = ?1 , b.version = ?2" ,book.class);      query.setparameter(1, title);     query.setparameter(2, version);     return query.getsingleresult(); } 

i'm using mysql , have records should returned. store 'version' float type (1.22 in case). query returns:

javax.persistence.noresultexception: no entity found query

float has here, query title works fine.