Category: Postgres
Postgres Blog Archives, by Peter Whyte (SQL Server Database Admin). Includes Postgres posts from a SQL Server DBA’s perspective!
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Why Use WHERE 1=2 in SQL
In a previous blog post, I explained why WHERE 1=1 is often used in SQL queries. This time, let’s discuss WHERE 1=2 — or any condition that results in a FALSE value, such as WHERE 1=9. Essentially, the point is to use a condition that is guaranteed to…
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How to Install Postgres on Ubuntu 20.04
This post is a short note on how to install Postgres on Ubuntu 20.04. I’m doing this in WSL, however this shouldn’t make any difference if you’re on the same Ubuntu version. First, lets update our local packages by running the following apt command – This Postgres installation…
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List all Tables & Columns in Redshift or Postgres
In this blog post I’m sharing SQL Script that will list all Tables and Columns in Redshift or Postgres for all Schemas. Redshift and Postgres are closely related, as Redshift is a fork of Postgres, sharing many similarities while also having distinct features. A lot of the core…
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Why use WHERE 1=1 in SQL Queries
A common SQL question is, why would anyone use WHERE 1=1 in their queries? And what does it do? The WHERE 1=1 condition means WHERE TRUE. It returns the same query result as it would without the WHERE Clause. There is no impact on query execution time. This…
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Creating a Linked Server for a PostgreSQL Database
This is a post on how to create a Linked Server to a PostgreSQL database. In my previous post, I created a Linked Server to another SQL Server instance. This time, it’s a link to a Postgres database. I recommend checking out my other post for pre-requisite information…
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Reset Default PostgreSQL User Password
A common scenario working with Postgres is when you have forgotten your default Postgres user password. This is the password you will have entered during your Postgres installation. This is a guide on how to reset the default Postgres user password. This should hopefully help you resolve this…
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How To Install PostgreSQL on Windows
PostgreSQL is a free open-source RDMS that is widely used and forked. Other than PostgreSQL itself, Redshift is the only other forked database I’ve ever touched. This blog post is a very simple wizard run-through of installing PostgreSQL and Stack Builder on Windows for testing. # Install PostgreSQL…
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