CYBERTEC PostgreSQL Logo
Ants Aasma Profile Picture

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

btree vs. BRIN: 2 options for indexing in PostgreSQL data warehouses

by Hans-Jürgen Schönig | 11.2022
How do you index in a data warehouse? See the advantages and disadvantages of btree (AKA B-tree) and BRIN indexes in PostgreSQL.

pgbouncer: Types of PostgreSQL connection pooling

by Hans-Jürgen Schönig | 10.2022
Connections are not free. Conserve your resources - find out about connection pooling in PostgreSQL with pgbouncer.

VACUUM does not shrink my PostgreSQL table

by Hans-Jürgen Schönig | 10.2022
Did you ever wonder why VACUUM does not shrink PostgreSQL data files? Learn all the most useful secrets of VACUUM.

LISTEN / NOTIFY: Automatic client notification in PostgreSQL

by Hans-Jürgen Schönig | 09.2022
If 1000's of users constantly poll the database, a lot of load is caused for no benefit. LISTEN / NOTIFY is a better way, find out how.

PostgreSQL: Sequences vs. Invoice numbers

by Hans-Jürgen Schönig | 09.2022
What's the problem with using PostgreSQL database side sequences to create unique invoice numbers to send to clients? Let's find out.

What is an inner join in SQL? And what is an outer join?

by Hans-Jürgen Schönig | 09.2022
Joins: Learn how to use an inner join and an outer join in PostgreSQL today by reading our tutorial. Also covers semi and full joins.

ERROR: nextval: reached maximum value of sequence

by Hans-Jürgen Schönig | 09.2022
Fix "ERROR: nextval: reached maximum value of sequence in PostgreSQL" - related to using serial data type to generate auto-increment columns

ALTER TABLE ... ADD COLUMN … done right in PostgreSQL

by Hans-Jürgen Schönig | 08.2022
Running ALTER TABLE … ADD COLUMN can cause serious issues in production. Understand how to cleanly change PostgreSQL data structures.

Column order in PostgreSQL does matter

by Hans-Jürgen Schönig | 07.2022
Column order can determine how quickly your data is processed in PostgreSQL. Find out how to troubleshoot performance problems in wide tables

Handling Bonus Programs in SQL

by Hans-Jürgen Schönig | 07.2022
Learn how to address the issue of bonus programs in SQL, improve your understanding of PostgreSQL, and calculate bonus points efficiently
1 … 3 4 5 6 7 … 29
CYBERTEC Logo white
STAY TUNED WITH OUR NEWSLETTER
Get the newest PostgreSQL Info & Tools


    This site is protected by reCAPTCHA and the Google Privacy Policy & Terms of Service apply.

    ©
    2025
    CYBERTEC PostgreSQL International GmbH
    phone-handsetmagnifiercrosscross-circle
    linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram