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Add a primary key to an existing table

Recently we started to move some old legacy databases from our data center to AWS. We are moving them to

Checking your PostgreSQL database version is a simple process, but there are several ways to obtain that information. If you

There is a group of PostgreSQL views that allow you to view various statistics on the database. Some of the

Do you want to sleep with PostgreSQL or maybe just have your session sleep for a bit? Well, we have

In addition to DBAs and data engineers, SQL is used by analysts, data scientists, product managers, programmers, and designers. There

Once a table is created you can alter its configuration and set default values for a column. When altering a

Have you ever needed to extract the domain name from a string using PostgreSQL? There are various methods to accomplish

In addition to PostgreSQL 12.1 the community also released versions 11.6, 10.11, 9.6.16, 9.5.20, and 9.4.25. As a rule of

PostgreSQL 12 Initial Query Performance Impressions With the latest major version freshly released, it’s again time to gauge its performance.

Starting with PostgreSQL 11.2, 10.7, 9.6.12, 9.5.16, and 9.4.21 the fsync() behavior has changed. Here is what the PostgreSQL group