foreign key « Query « JPA Q&A

1. JPA: query to get results based on value of foreign key defined in the entity class? stackoverflow.com

Netbean 6.9 generated the following JPA entity class from this SQL Server 2008 table: alt text I want to get all the ProductDescriptors that have a specific SKU value. Something ...

2. how could i use JPA criteria query api for joined columns? stackoverflow.com

i am new to JPA and i have a problem with it. suppose that we have two tables which are related by a ManytoOne association, which means that table A stores a primary ...

3. Convert SQL statement 'LIKE' to JPQL statement stackoverflow.com

I want to write this SQL statement in eclipse JPQL query. It works in SQL but I'm not sure how to write it in eclipse.

SELECT * 
FROM hardware h
WHERE h.`Staffid` LIKE ...

4. Grails, how to find by a record by its foreign key stackoverflow.com

I have two domains that are a part of a one-to-many relations ship. I was wondering how i can query the child for the parents FK? bellow is the ...

5. Hibernate deletes rows after select stackoverflow.com

I've been working with hibernate this last month and I'm a bit stuck. I've got a table, item, wich has a lot of relathionships implemented with the typical many-to-many table, i.e. ...

6. query a database table using a foreign key ( where) using Hibernate. coderanch.com

Hello, i m new to hibernate, so the question might look stupid. I have the two tables: CREATE TABLE CUSTOMER ( USERNAME VARCHAR(50) PRIMARY KEY, PASSWORD VARCHAR(50) NOT NULL, ) CREATE TABLE CUSTOMERORDER ( ORDERID VARCHAR(50) PRIMARY KEY, USERNAME VARCHAR(50) NOT NULL, TOTALCOST DOUBLE NOT NULL, FOREIGN KEY (USERNAME) REFERENCES CUSTOMER (USERNAME) ) and i want to get a list of ...

7. How does Hibernate handle a nullable foreign key in a query? coderanch.com

If you have, say, a CUSTOMER table with a ORDERS table where the customer foreign key in the ORDERS table can be null, will Hibernate automatically create a Left Outer Join so you can still see the customers without orders? How do you configure how Hibernate does the joins (inner join, Left Outer Join, etc.)? Thanks, mike

8. Foreign key / one to many relationship at query time forum.hibernate.org

I am using the following version of hibernate and oracle: Hibernate version: 2.1 Name and version of the database you are using: Oracle 9i My question is that: I have two tables T and G. G has a T.id as a foreign key in it. We want this to be transparent to the users of the APIs we are developing. Therefore, ...

9. How to disable foreign key contratins on select forum.hibernate.org

Does anyone know if it's possible to disable data integrity check when doing a select for the whole object graph - using queries like "FROM Sometable t"? i ran into a problem when one of the records has a reference (via a foreign key) to another object, and the other object does not exist since the record in the database has ...

10. Can sql-query hydrate an object with foreign keys? forum.hibernate.org

Newbie Joined: Mon May 09, 2005 2:29 pm Posts: 2 Location: Irvine, CA I have a User class with foreign keys to a BillingEntity and a UserRole, each mapped with tags. I am trying to create a named to find a set of Users with a complex constraint. However, I don't know how to map the ENTITY_ID or ROLE_ID ...