How to select a record and update it, with a single queryset in Django?
How do I run an update and select statements on the same queryset rather than having to do two queries: – one to … Read more
orm
When and why JPA entities should implement the Serializable interface?
The question is in the title. Below I just described some of my thoughts and findings. When I had a very simple domain … Read more
What is lazy loading in Hibernate?
What is lazy loading in Java? I don’t understand the process. Can anybody help me to understand the process of lazy loading? 14 … Read more
Doctrine – How to print out the real sql, not just the prepared statement?
We’re using Doctrine, a PHP ORM. I am creating a query like this: $q = Doctrine_Query::create()->select(‘id’)->from(‘MyTable’); and then in the function I’m adding … Read more
Difference Between One-to-Many, Many-to-One and Many-to-Many?
Ok so this is probably a trivial question but I’m having trouble visualizing and understanding the differences and when to use each. I’m … Read more
How to persist a property of type List in JPA?
What is the smartest way to get an entity with a field of type List persisted? Command.java package persistlistofstring; import java.io.Serializable; import java.util.ArrayList; … Read more
How to query between two dates using Laravel and Eloquent?
I’m trying to create a report page that shows reports from a specific date to a specific date. Here’s my current code: $now … Read more
SQLAlchemy: engine, connection and session difference
I use SQLAlchemy and there are at least three entities: engine, session and connection, which have execute method, so if I e.g. want … Read more
Map enum in JPA with fixed values?
I’m looking for the different ways to map an enum using JPA. I especially want to set the integer value of each enum … Read more
Is there a way to call a stored procedure with Dapper?
I am very impressed with the results of Dapper Micro ORM for stackoverflow.com. I am considering it for my new project and but … Read more