22 | Paths and Types in JPQL and Criteria API of all the entity objects in the database, excluding Country entity objects: SELECT COUNT(e) FROM ... of the iterated e. Only objects whose type is not Country are passed to the SELECT. The SELECT clause counts ... one group, and COUNT calculates its size). Criteria Query Paths and Types Paths and navigations |
13 | Strings in JPQL and Criteria Queries. LENGTH - Counting Characters in a String The LENGTH(str) function returns the number of characters in |
13 | FROM clause (JPQL / Criteria API), CHARACTER_LENGTH, CLASS, COALESCE, CONCAT, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP |
13 | Is ObjectDB better than competing object databases? queries (max, min, count, sum and avg). ObjectDB supports rich queries, including aggregate queries |
13 | JPA Query Structure (JPQL / Criteria) GROUP BY / HAVING (groupBy, having, count, sum, avg, min, max, ...). Criteria ORDER BY (orderBy, Order, asc, desc). |
13 | Numbers in JPQL and Criteria QueriesNumeric values may appear in JPQL queries in many forms: as numeric literals - e.g. 123, -12.5. as parameters - when numeric values are assigned as arguments. as path expressions - in navigation to persistent numeric fields. as aggregate expressions - e.g. COUNT. as collection functions |
13 | Privacy Policy, and single-pixel gifs) that permit the Company, for example, to count users who have visited those pages or |
2 | Step 3: Add a Main Class of Point objects in the database: Query q1 = em.createQuery("SELECT COUNT(p) FROM Point p |
2 | Step 3: Add a Main Class the database: Query q1 = em.createQuery("SELECT COUNT(p) FROM Point p |
1 | [ODB1] Chapter 7 - JDOQL Queries objects can be obtained using the size() method: int count = result.size(); Iteration |
