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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.

Generating a normal distribution in SQL

by Hans-Jürgen Schönig | 09.2020
SQL and PostgreSQL can be used to create sample data which possesses certain statistical properties like a normal distribution.

PostgreSQL vs PostgreSQL vs Postgres vs Oracle vs all the rest

by Hans-Jürgen Schönig | 09.2020
How can you find data even if there are typos? In PostgreSQL there are various solutions to the problem of a search with odd spelling.

PostgreSQL: GROUP BY expression

by Hans-Jürgen Schönig | 08.2020
GROUP BY is an integral part of SQL and PostgreSQL. You might not know that the GROUP BY expression can handle more than just simple fields.

Understanding recursive queries in PostgreSQL

by Laurenz Albe | 08.2020
  Many people consider recursive queries a difficult topic. Still, they enable you to do things that would otherwise be […]

PostgreSQL: More performance for LIKE and ILIKE statements

by Hans-Jürgen Schönig | 07.2020
This blogpost shows what PostgreSQL can do to speed up LIKE and ILIKE to archieve better PostgreSQL database performance.

Calculating differences between rows in SQL

by Hans-Jürgen Schönig | 06.2020
Calculating differences between rows | How can one calculate the difference between the current and the previous row? | timeseries data

SQL trickery: Hypothetical aggregates

by Hans-Jürgen Schönig | 06.2020
“If we had this data what would it mean?” - read more about this PostgreSQL technique, what it is good for & how it works.

PostgreSQL: Speeding up recursive queries and hierarchical data

by Hans-Jürgen Schönig | 06.2020
How to use a hierarchical query, which is an SQL query that handles model data such as the structure of organizations - find out more

SQL trickery: Configuring window functions

by Hans-Jürgen Schönig | 05.2020
How to use window functions and analytics - these have long been around in PostgreSQL and are widely used by advanced developers.

Partition management - do you really need a tool for that?

by CYBERTEC Guest | 05.2020
How to use partition management to speed up queries in PostgreSQL and make tables more manageable as data amounts grow.
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