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1-10 of 138 resultsRefreshUnexpected COUNT Results the list with size 1380. This is expected result If we add COUNT operator: b. SELECT COUNT($1.id) FROM Pa3DataKey $1 WHERE $1.timestamp <= 187526 AND ($1 ... COUNT($1.id) FROM Pa3DataKey $1 WHERE $1.timestamp <= 187526 AND ($1.dataItems.get('Receiver | |
getting "Unexpected total page count" error when diagnosis mu db by ObjectDB doctor.When am diagnosis my db it gave following report Global Value Errors ------------------- [1] Unexpected total page count: 512 (expected 449). On repair the db some of query are not working. can you please tell me what does the above error mean and how can i resolve this? Thanks | |
Processing thread count for 8-core server In reference to the information here: https://www.objectdb.com/java/jpa/setting/database#The_processing_element_ We are working with an 8-core processor. The recommended thread count | |
count(x)="Interface in javax.persistence.criteria">Expression<Long> count( count operation. Parameters: x - expression representing input value to count operation Returns: count | |
GROUP BY and HAVING clauses>Aggregate calculations (count, sum, avg, max, min) that are carried out on all the objects (or ... >COUNT - returns a long value representing the number of elements. The following query counts for every letter | |
Negative snapshot user count I finally hit an instance of the "Negative snapshot user count" exception 1) count com.objectdb.o.InternalException: Negative snapshot user count at com.objectdb.o.SNP.z(SNP.java:292) at com | |
Negative snapshot user count exception: Negative snapshot user count com.objectdb.o.InternalException: Negative snapshot user count ... , the "Negative snapshot user count" and the "mismatch client-server protocol" errors could be caused by ... snapshot user count" report (issue #556) was fixed 2 years ago. Possibly | |
ClassCastException thrown when running count query Hello! Attached you find a full stacktrace. The query was: SELECT COUNT(t) FROM Position t WHERE ((t.unit = :unit165w7ppbtu9ao AND t.receiveTime > ... a null pointer exception. Now back to the count query: SELECT COUNT(t | |
Running JPA Queries/jpa/EntityManager/createQuery_String_Class_">createQuery( "SELECT COUNT(c) FROM Country c ... /createQuery_String">createQuery("SELECT COUNT(c) FROM Country c"); long countryCount = (Long)query.getSingleResult(); An aggregate COUNT | |
CRUD Database Operations with JPA("SELECT COUNT(p) FROM Point p"); System.out.println("Total Points: " + q1.getSingleResult()); The query string ("SELECT COUNT(p) FROM Point p") instructs JPA to count all the Point objects in the database. If you have used SQL |