6 | How to check if an entity exists in a Database without loading it? WHERE e.pk = :pk or SELECT COUNT(e) FROM MyClass e WHERE e.pk = :pk support Support |
6 | LazyInitialization / join fetch count ( item0_.codigo ) from the col_0_0_ item item0_ Nov `` ` This may be occurring due to not doing |
6 | Conflicting modifiers .... (javax.persistence.Id, javax.persistence.ManyToOne)({ @NamedQuery(name = "numberOfMapItems", query = "SELECT COUNT(x) FROM CompoundKeyMapItem x |
6 | collection of embedded objects of @Embeddable objects? ie. Suppose I want to query: SELECT count(a) FROM A a WHERE a.setOfB.value =:value |
6 | ObjectDB size not reducing record count reduces. Trianglehead Json Error When objects are removed sections of the database |
6 | java.sql.Timestamp.getTime() not workingHi, I need to work with Timestamp diff in two entity fields, but this queries SELECT count(p) FROM Player p WHERE p.loginAt.getTime()-p.registeredAt.getTime()>:value SELECT p.loginAt.getTime() FROM Player p fails with object is not an instance of declaring class or java.lang |
6 | Entity has be persistended,but query not fetched?); System.out.println("count: " + query.getResultList().size()); em.getTransaction |
6 | Sorting problem this kind of method: public List<Product> list( int start, int count, String sortColumn, boolean |
1 | Blocked by find Richard Szurgot This new stack trace helped solving the "Negative snapshot user count" error (Issue |
1 | Server out of memory exceptions databases do you use concurrently? Following the thread dump I count about 9 open databases. For 10 open |
