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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.

Permissions: A little trickery

by Hans-Jürgen Schönig | 12.2015
Learn how to use the INHERIT keyword in PostgreSQL, which allows a role to inherit permissions from another role. There is a catch, however.

Producing LaTeX output

by Hans-Jürgen Schönig | 12.2015
By coincidence I noticed that psql can produce perfect LaTeX code. How cool is that? We show you how to do it, with examples.

Flexible grouping: Some dirty SQL trickery

by Hans-Jürgen Schönig | 11.2015
How to group PostgreSQL data with some dirty SQL trickery. Find the difference between timestamps; how to use flexible grouping.

Scaling PostgreSQL: Using more than just one core for aggregation

by Hans-Jürgen Schönig | 09.2015
Unfortunately PostgreSQL cannot scale a single query to more than one core. We have done some experiments to see how scaling up can work.

Fuzzy search unleashed

by Hans-Jürgen Schönig | 08.2015
Fuzzy search solves the problem of spelling errors in searches. The goal is really to make sure that users have a chance - even with typos.

Turning xlog into JSON

by Hans-Jürgen Schönig | 08.2015
JSON is used for configuration, data transfer, and a lot more. Luckily PostgreSQL is pretty good at it. Turn xlog into JSON.

Transactional DDLs

by Hans-Jürgen Schönig | 07.2015
In PostgreSQL all major DDLs (CREATE TABLE, ...) are fully transactional. However, there are some exceptions.

Naming temporary tables properly in PostgreSQL

by Hans-Jürgen Schönig | 06.2015
What if a temporary table in PostgreSQL has the same name as a “real” table? What happens? Find out about naming temporary tables properly.

Partial aggregation: The beautiful way

by Hans-Jürgen Schönig | 02.2015
Partial aggregation: Functions such as min, max, count, sum, avg and so on are used in virtually every application. Find out more.

Managing backup speed with pg_basebackup

by Hans-Jürgen Schönig | 01.2015
How to adjust backup speed when using pg_basebackup in PostgreSQL. What if the I/O capacity of servers is low & network bandwidth is large?
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