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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.

OpenStreetMap service by CYBERTEC

by Florian Nadler | 10.2021
In response to repeated customer requests seeking spatial datasets based on the OpenStreetMap service, CYBERTEC decided to start an initiative […]

Gaps in sequences in PostgreSQL

by Laurenz Albe | 09.2021
  Most database tables have an artificial numeric primary key, and that number is usually generated automatically using a sequence. […]

JSON in PostgreSQL: how to use it right

by Laurenz Albe | 09.2021
  The comprehensive JSON support in PostgreSQL is one of its best-loved features. Many people – particularly those with a […]

Building an Oracle to PostgreSQL migrator: Lessons learned

by Hans-Jürgen Schönig | 09.2021
Today, I want to share some of the lessons learned when it comes to actually building an Oracle to PostgreSQL […]

PostGIS upgrade with Ubuntu 20.04.02

by Florian Nadler | 09.2021
Last time, we installed PostGIS on top of PostgreSQL. Today, I will complement this article by describing how to upgrade […]

Fixing out-of-sync sequences in PostgreSQL

by Hans-Jürgen Schönig | 08.2021
Creating auto increment columns in PostgreSQL is easy. Simply use two pseudo data types serial and serial8, respectively, then PostgreSQL […]

PostgreSQL grouping sets: ROLLUP & CUBE

by Hans-Jürgen Schönig | 08.2021
PostgreSQL is one of the best OLTP databases (OLTP = online transaction processing) in the world. However, it can do […]

PostgreSQL Security: 12 rules for database hardening

by Hans-Jürgen Schönig | 07.2021
UPDATED August 2023: Hardening PostgreSQL has become ever more important. Security is king these days and people want to know […]

PostgreSQL: LIMIT vs FETCH FIRST ROWS ... WITH TIES

by Hans-Jürgen Schönig | 07.2021
Most people in the SQL and in the PostgreSQL community have used the LIMIT clause provided by many database engines. […]

Understanding LATERAL joins in PostgreSQL

by Hans-Jürgen Schönig | 07.2021
LATERAL joins are one of the lesser-known features of PostgreSQL and other relational databases such as Oracle, DB2 and MS […]
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