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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.

PostgreSQL 9.4 aggregate filter clauses: They do pay off

by Hans-Jürgen Schönig | 02.2015
In this blog ppost we cover the impact of aggregate FILTER clauses have on performance. Find out more about aggregation filters.

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.

Regular expressions unleashed in PostgreSQL

by Hans-Jürgen Schönig | 04.2014
How to use an operator to work with regular expressions in PostgreSQL: includes list and a case-sensitive example. Fun with coding PostgreSQL

Fed up with long WHERE-clauses?

by Hans-Jürgen Schönig | 12.2013
What if you want to compare dozens of columns with each other in PostgreSQL? Find out how to do it right here.

Making random() deterministic - random generator in PostgreSQL

by Hans-Jürgen Schönig | 12.2013
How to reproduce a random sequence of numbers. Reset the random generator to restart a certain value in PostgreSQL. random()

PostgreSQL: Finding Christmas presents

by Hans-Jürgen Schönig | 12.2013
In this blog we are talking about KNN-search. KNN-search has been made for finding something close to what you are looking for.

Operator classes explained

by Hans-Jürgen Schönig | 11.2013
In this blog we are tallking about the topic operator class. We will show you some strategies for your database.

CREATE DOMAIN: Data type abstraction

by Hans-Jürgen Schönig | 10.2013
In a procedural language such as C people will create typedefs & functions But what about data type abstraction in SQL?

Per-tablespace storage parameters

by Hans-Jürgen Schönig | 10.2013
A per-tablespace can be used to add more hardware to the system – but, is there some other way to make use of a tablespace? There is!

Sequences – transactional behavior

by Hans-Jürgen Schönig | 09.2013
Creating and using sequences in PostgreSQL - Database sequences are database objects from which multiple users can generate unique numbers.
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