ALTER TABLE ... ADD COLUMN … done right in PostgreSQL
Running ALTER TABLE … ADD COLUMN can cause serious issues in production. Understand how to cleanly change PostgreSQL data structures.
Migrate scheduled jobs to pg_timetable from pgAgent
Why migrate to pg_timetable from pgAgent? There are many reasons, actually, why people might want to export pgAgent jobs to […]
How to corrupt your PostgreSQL database
by
Laurenz Albe |
08.2022Of course most people do not want to corrupt their databases. These people will profit from avoiding the techniques used […]
Handling Bonus Programs in SQL
Learn how to address the issue of bonus programs in SQL, improve your understanding of PostgreSQL, and calculate bonus points efficiently
Transaction anomalies with SELECT FOR UPDATE
by
Laurenz Albe |
06.2022© Laurenz Albe 2022 I was recently confronted with a nice example of how adding FOR UPDATE to a query […]
(Updated 2023-04-07) Even if you understand what a deadlock is, debugging deadlocks can be tricky. This article shows some […]
Case-insensitive pattern matching in PostgreSQL
by
Laurenz Albe |
06.2022 (Updated on 2024-11-27) Case-insensitive search is a much-requested feature, partly (I suspect) to maintain compatibility with Microsoft SQL […]
Migrate scheduled jobs to pg_timetable from pg_cron
Why migrate to pg_timetable from pg_cron? There are a lot of reasons you may want to migrate from pg_cron: maybe […]
View permissions and row-level security in PostgreSQL
by
Laurenz Albe |
06.2022 The details of how view permissions are checked have long puzzled me. PostgreSQL v15 introduces “security invoker” views, which […]
How to cancel a hanging PostgreSQL query
by
Laurenz Albe |
05.2022 Sometimes a PostgreSQL query takes forever. Usually, it is easy to interrupt (cancel) such a statement, but sometimes it […]
