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Category: How To

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

CREATE CAST: Casting integer to IP in PostgreSQL

by Hans-Jürgen Schönig | 05.2014
Once in a while, you have to juggle around with IP addresses and store them / process them in an […]

Regular expressions unleashed in PostgreSQL

by Hans-Jürgen Schönig | 04.2014
When cleaning up some old paperwork this weekend I stumbled over a very old tutorial on regular expressions. In fact, […]

Bypassing the transaction log

by Hans-Jürgen Schönig | 04.2014
Referring to my previous blog post about the amount of xlog written by PostgreSQL I wanted to clarify what I […]

Detecting fraud: Benford's law

by Hans-Jürgen Schönig | 01.2014
Many people use PostgreSQL to store data and do some basic analysis. However, there is more to data than many […]

Fed up with long WHERE-clauses?

by Hans-Jürgen Schönig | 12.2013
SQL is a very easy to use language and it is pretty easy to make things work out of the […]

PostgreSQL shutdown modes

by Hans-Jürgen Schönig | 12.2013
When doing trainings or consulting sessions I have the feeling that most people are not fully aware of PostgreSQL's shutdown […]

Tracking changes in PostgreSQL

by Hans-Jürgen Schönig | 12.2013
UPDATED 21 March 2023: Tracking database changes and tracing users has always been a vitally important part of PostgreSQL database […]

Making random() deterministic - random generator in PostgreSQL

by Hans-Jürgen Schönig | 12.2013
Basically the idea of a random generator is to generate random data – ideally a lot of random and non-deterministic […]

PostgreSQL: Finding Christmas presents

by Hans-Jürgen Schönig | 12.2013
Christmas is approaching fast so I thought I'd give PostgreSQL users some inspiration when it comes to buying their Christmas […]

effective_cache_size: Better set it right

by Hans-Jürgen Schönig | 11.2013
PostgreSQL knows a parameter called effective_cache_size. To many this is one of the most mysterious settings in the entire PostgreSQL […]
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