Tag: transactions

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Here you can find all blog posts about the Tag: transactions. You can go back to all blog posts or take a look into our other categories & tags.

Row locks in PostgreSQL

by Laurenz Albe | 04.2023
  The PostgreSQL documentation has some information about row locks. But typically, you cannot see them in pg_locks, and not […]

Stored procedures in PostgreSQL: getting started

by Hans-Jürgen Schönig | 02.2023
Stored procedures are a core concept which can be found in most relational database systems. They have proven to be […]

LISTEN / NOTIFY: Automatic client notification in PostgreSQL

by Hans-Jürgen Schönig | 09.2022
What is LISTEN and NOTIFY? LISTEN / NOTIFY is a feature that enables users to listen to what goes on […]

PostgreSQL: Sequences vs. Invoice numbers

by Hans-Jürgen Schönig | 09.2022
Sequences are a core feature of SQL. However, some users are tempted to implement sequences to generate invoices. That's dangerous […]

Transaction anomalies with SELECT FOR UPDATE

by Laurenz Albe | 06.2022
  I was recently confronted with a nice example of how adding FOR UPDATE to a query can introduce transaction […]

WITH HOLD cursors and transactions in PostgreSQL

by Laurenz Albe | 10.2021
  Both cursors and transactions are basic ingredients for developing a database application. This article describes how cursors and transactions […]

PostgreSQL grouping sets: ROLLUP & CUBE

by Hans-Jürgen Schönig | 08.2021
PostgreSQL is one of the best OLTP databases (OLTP = online transaction processing) in the world. However, it can do […]

Speeding up count(*): Why not use max(id) - min(id)

by Hans-Jürgen Schönig | 04.2020
Our PostgreSQL blog about “Speeding up count(*)” was widely read and discussed by our followers on the internet. We also […]

Subtransactions and performance in PostgreSQL

by Laurenz Albe | 03.2020
  (Last updated on 2023-01-24) Recently, while troubleshooting PostgreSQL performance problems, I ran into problems with subtransactions twice. So I […]

Implementing Autonomous Transactions in Postgres

by CYBERTEC Guest | 07.2019
BY Kaarel Moppel - Having recently witnessed quite an ingenious hack to implement some good old "println" style development debugging […]
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