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Hans-Jürgen Schönig

Founder & CEO of CYBERTEC
Hans-Jürgen Schönig has worked with PostgreSQL since the 90's. He is the CEO and technical lead of CYBERTEC PostgreSQL International, a market leader in the field. He's served countless customers around the globe since the year 2000. He is also the author of the well-received "Mastering PostgreSQL" book series, as well as several other books about PostgreSQL replication and administration.

Articles by Hans-Jürgen Schönig

Code size over time

by Hans-Jürgen Schönig | 08.2014
Out of plain curiosity I decided to start a little analysis regarding the code size of the PostgreSQL project over time.

Speed up PostgreSQL data loading with COPY (FREEZE)

by Hans-Jürgen Schönig | 08.2014
UPDATED JUL 2023 How to load data fast and efficiently in PostgreSQL using COPY (FREEZE). Organize data nicely by instantly writing hint bits.

Speeding up things with hint bits

by Hans-Jürgen Schönig | 08.2014
UPDATED June 2023: What are hint bits in PostgreSQL? Hint bits improve PostgreSQL performance - find out why and how. Includes code examples.

Optimization issues: Cross column correlation

by Hans-Jürgen Schönig | 07.2014
UPDATED Sept. 2023 - A couple of years ago I stumbled over an interesting PostgreSQL issue which is commonly known as “cross correlation”.

Detecting wrong planner estimates

by Hans-Jürgen Schönig | 07.2014
The PostgreSQL planner optimizes your queries, and mostly does it right. The question is: How to figure out when & where things do go wrong?

Reducing log messages on the client

by Hans-Jürgen Schönig | 06.2014
Frequently PostgreSQL client applications are flooded with log messages from the server. Correct this by changing the server configuration.

CREATE CAST: Casting integer to IP in PostgreSQL

by Hans-Jürgen Schönig | 05.2014
How to store and process IP addresses in an efficient way. To do so PostgreSQL provides us with data types by casting integer.

The power of response times and execution time

by Hans-Jürgen Schönig | 04.2014
The goal of the PostgreSQL optimizer is to provide a plan which executes as fast as possible & returns all the data as rapidly as possible.

Regular expressions unleashed in PostgreSQL

by Hans-Jürgen Schönig | 04.2014
How to use an operator to work with regular expressions in PostgreSQL: includes list and a case-sensitive example. Fun with coding PostgreSQL

Bypassing the transaction log

by Hans-Jürgen Schönig | 04.2014
When data is changed generally the change must be written to the xlog before it is written to the underlying table.
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