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Django queries - id vs pk
When writing django queries one can use both id/pk as query parameters.
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Android: View.setID(int id) programmatically - how to avoid ID conflicts?
I'm adding TextViews programmatically in a for-loop and add them to an ArrayList.
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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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Union Vs Concat in Linq
I have a question on Union and Concat . I guess both are behaving same in case of List<T> .
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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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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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“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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Why does Haskell's “do nothing” function, id, consume tons of memory?
Haskell has an identity function which returns the input unchanged. The definition is simple:
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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:
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