93 | String Contains Query Result - Possible?String Contains Query Result - Possible? |
93 | Object as parameter results in exceptionObject as parameter results in exception |
93 | ObjectDB 2.6.9_06 (embedded): Cascading merge resulting in duplicate objectsObjectDB 2.6.9_06 (embedded): Cascading merge resulting in duplicate objects |
17 | CRUD Database Operations with JPA. The getSingleResult method executes the query and returns the result. It should only be used when exactly one result value is expected (a single Long object in the query above). Let's see another example of a query that returns a single result: Query q2 = em.createQuery("SELECT AVG(p.x) FROM |
16 | FROM clause (JPQL / Criteria API) pair of countries that do not share a border, returning as results only neighboring countries ... capital) is not part of any iterated pair and is therefore excluded from the query results. INNER JOIN ... and result iteration: TypedQuery<Country> query = em.createQuery("SELECT c FROM Country c |
14 | Database Management Settings" synchronized="false" /> <index-update enabled="true" priority="40" /> <query-cache results ... to accelerate the execution of relevant queries. The <query-cache> element <query-cache results="32mb ... that ObjectDB manages for queries: The results attribute specifies the size of the query result cache. Caching |
14 | Logical Operators in JPQL and Criteria API the result is FALSE, because one FALSE operand is sufficient for a FALSE result. If one operand is NULL and the other operand is either TRUE or NULL, the result is NULL (unknown). ObjectDB supports the Java ... NULL represents unknown. Therefore, if one operand is NULL and the other operand is TRUE the result |
14 | JPA Query API should be used mainly when the query result type is unknown or when a query returns polymorphic results and the lowest known common denominator of all the result objects is Object. When a more specific result type is expected queries should usually use the TypedQuery interface. It is easier to run |
12 | javax.persistence.criteria.CriteriaQuery> distinct(boolean distinct) Specify whether duplicate query results will be eliminated. Specify whether duplicate query results will be eliminated. A true value will cause duplicates to be eliminated ... results must be retained. Parameters: distinct - boolean value specifying whether duplicate results |
1 | javax.jdo.Query. There are three required elements in a Query: the class of the results, the candidate collection ... , import statements, ordering and grouping specifications, result and result class, the range of results, and flags indicating whether the query result is unique and whether the query can be modified |
