How to Avoid N+1 Queries: Comprehensive Guide and Python Code Examples
This article describes the N+1 problem that we often find when developers use row by row solutions for querying related data in a database.
2023-06-21
4,763 reads
rohin daswani
An Overview of PostgreSQL Window Functions
This article looks at Window functions and how they can be used to solve problems in a different way from standard aggregate functions.
2023-02-24
6,036 reads
Nullable vs Non-Nullable Columns and Adding Not Null Without Downtime in PostgreSQL
In this article, we are going to talk about nullable and non-nullable columns specifically related to Postgres databases. While the reasons to use nullable or non-nullable columns may seem obvious at first, there are pitfalls associated with each decision that either affect development velocity, affect application performance, or cause downtime. Let's start with definitions. Nullable […]
2023-02-03
15,515 reads
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Not Just an Upgrade
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Question of the Day
Restoring On Top I
I am doing development work on a database and want to keep a backup so I can reset my database. I make some changes and want to restore over top of my changes. When I run this code, what happens?
USE Master BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak' GO USE DNRTest GO CREATE TABLE MyTest(myid INT) GO USE master RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACESee possible answers