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Django queries - id vs pk

When writing django queries one can use both id/pk as query parameters. 2 Answers 2 ...
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Include intermediary (through model) in responses in Django Rest Framework

I have a question about dealing with m2m / through models and their presentation in django rest framework. Let's take a classic example: ...
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Migration: Cannot add foreign key constraint

I'm trying to create foreign keys in Laravel however when I migrate my table using artisan i am thrown the following error: ...
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How to select rows with no matching entry in another table?

I'm doing some maintenance work on a database application and I've discovered that, joy of joys, even though values from one table are being used in the style of foreign keys, there's no foreign key constraints on the tables. ...
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javascript find and remove object in array based on key value

I have been trying several approaches on how to find an object in an array, where ID = var, and if found, remove the object from the array and return the new array of objects. ...
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Union Vs Concat in Linq

I have a question on Union and Concat . I guess both are behaving same in case of List<T> . 3 Answers ...
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Insert if not exists” statement in SQLite

I have an SQLite database. I am trying to insert values ( users_id , lessoninfo_id ) in table bookmarks , only if both do not exist before in a row. ...
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Single controller with multiple GET methods in ASP.NET Web API

In Web API I had a class of similar structure: 17 Answers 17 ...
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What is the “owning side” in an ORM mapping?

What exactly does the owning side mean? What is an explanation with some mapping examples ( one to many, one to one, many to one )? ...
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Rails :include vs. :joins

This is more of a "why do things work this way" question rather than a "I don't know how to do this" question... 8 Answers ...