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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.

effective_cache_size: Better set it right

by Hans-Jürgen Schönig | 11.2013
effective_cache_size can have a serious impact on execution plans and change things dramatically. See what kind of difference it can make.

Operator classes explained

by Hans-Jürgen Schönig | 11.2013
In this blog we are tallking about the topic operator class. We will show you some strategies for your database.

Common security issues prior to PostgreSQL 15

by Hans-Jürgen Schönig | 10.2013
UPDATED July 2023: How to avoid security issues in PostgreSQL prior to v15 due to the public schema. Repair the problem.

Reducing space consumption

by Hans-Jürgen Schönig | 10.2013
After digging through some customer source code yesterday I thought that it might be worth publishing a post about space consumption and enum types. It seems to be quite common to store status information as text fields. This is highly inefficient.

CREATE DOMAIN: Data type abstraction

by Hans-Jürgen Schönig | 10.2013
In a procedural language such as C people will create typedefs & functions But what about data type abstraction in SQL?

Changing histogram sizes

by Hans-Jürgen Schönig | 10.2013
Statistics are the rocket fuel behind performance. Learn to adjust histogram sizes for optimal performance results.

Reducing the impact of locking

by Hans-Jürgen Schönig | 10.2013
(Bad) locking and low concurrency lead to poor performance results. Learn to minimize locking in PostgreSQL.

Per-tablespace storage parameters

by Hans-Jürgen Schönig | 10.2013
A per-tablespace can be used to add more hardware to the system – but, is there some other way to make use of a tablespace? There is!

Sequences – transactional behavior

by Hans-Jürgen Schönig | 09.2013
Creating and using sequences in PostgreSQL - Database sequences are database objects from which multiple users can generate unique numbers.

Import stock market data into PostgreSQL

by Hans-Jürgen Schönig | 09.2013
The internet is full of people who want to import stock market data into a database. How can data be imported into PostgreSQL nicely?
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