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Tag: sql help

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Here you can find all blog posts about the Tag: sql help. You can go back to all blog posts or take a look into our other categories & tags.

DROP TABLE: Killing shared_buffers

by Hans-Jürgen Schönig | 06.2015
UPDATED August 2023: Tuning shared_buffers in PostgreSQL is a pretty fundamental thing to do when you set up a high-performance […]

PostgreSQL 9.4 aggregate filter clauses: They do pay off

by Hans-Jürgen Schönig | 02.2015
In my previous posting on PostgreSQL 9.4 I wrote about aggregate FILTER clauses, which are a neat way to make […]

Partial aggregation: The beautiful way

by Hans-Jürgen Schönig | 02.2015
Partial aggregation: Aggregations are a fundamental feature of SQL. Functions such as min, max, count, sum, avg and so on […]

CREATE CAST: Casting integer to IP in PostgreSQL

by Hans-Jürgen Schönig | 05.2014
Once in a while, you have to juggle around with IP addresses and store them / process them in an […]

Regular expressions unleashed in PostgreSQL

by Hans-Jürgen Schönig | 04.2014
When cleaning up some old paperwork this weekend I stumbled over a very old tutorial on regular expressions. In fact, […]

Fed up with long WHERE-clauses?

by Hans-Jürgen Schönig | 12.2013
SQL is a very easy to use language and it is pretty easy to make things work out of the […]

Making random() deterministic - random generator in PostgreSQL

by Hans-Jürgen Schönig | 12.2013
Basically the idea of a random generator is to generate random data – ideally a lot of random and non-deterministic […]

PostgreSQL: Finding Christmas presents

by Hans-Jürgen Schönig | 12.2013
Christmas is approaching fast so I thought I'd give PostgreSQL users some inspiration when it comes to buying their Christmas […]

Operator classes explained

by Hans-Jürgen Schönig | 11.2013
After my morning session in Dublin some people asked me to share the codes of an operator class I created […]

CREATE DOMAIN: Data type abstraction

by Hans-Jürgen Schönig | 10.2013
If a good programmer is facing a technical problem, he will always try to abstract the problem. In a procedural […]
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