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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

PostgreSQL Vim integration: Finally ...

by Hans-Jürgen Schönig | 09.2013
Importing into Vim is basically not too much of an issue – but, exporting data back to PostgreSQL is more of an issue.

From PostgreSQL directly to Vim

by Hans-Jürgen Schönig | 09.2013
Some (obvious) ideas can struck you when you are just sitting around at the airport or so. This is exactly […]

Speeding up “min” and “max”

by Hans-Jürgen Schönig | 09.2013
In this blog you can read why indexes are a great tool. And how it is possible speeding up a query many times by avoiding a sequential scans,

Reporting: Creating correct output

by Hans-Jürgen Schönig | 08.2013
Creating reports is a core task of every PostgreSQL database engineer or developer. Learn to create reports properly.

Table bloat revisited: Making tables shrink in PostgreSQL

by Hans-Jürgen Schönig | 08.2013
UPDATED Understand table bloat. Why deleting data from a table in a PostgreSQL database does not always shrink files on disk.

Detecting table bloat in PostgreSQL

by Hans-Jürgen Schönig | 08.2013
If your PostgreSQL database is badly structured, you might face some table bloat. Figure out if a table is bloated or not.

Common mistakes: UNION vs. UNION ALL

by Hans-Jürgen Schönig | 08.2013
In my role as a PostgreSQL consultant and trainer there are a couple of issues, which pop up on a […]

Reducing the number of columns with bit

by Hans-Jürgen Schönig | 08.2013
How to reduce the number of columns using bitfields in PostgreSQL. "bit” can be used just as a normal char data type.

Time in PostgreSQL: Outer joins

by Hans-Jürgen Schönig | 08.2013
UPDATED Aug 2023: How to use “generate_series” in an outer join: Use PostgreSQL to aggregate data on an hourly basis.

Time in PostgreSQL: The simple way

by Hans-Jürgen Schönig | 08.2013
UPDATED Aug. 2023: How to process time in PostgreSQL: timeseries & generate_series, day constants, add and subtract from a time interval.
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