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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.

Calculating differences between rows in SQL

by Hans-Jürgen Schönig | 06.2020
Recently we had some clients who had the desire to store timeseries in PostgreSQL. One of the questions which interested […]

SQL trickery: Hypothetical aggregates

by Hans-Jürgen Schönig | 06.2020
“If we had this data what would it mean?” - these kinds of questions can be answered using plain SQL. […]

PostgreSQL: Speeding up recursive queries and hierarchical data

by Hans-Jürgen Schönig | 06.2020
A hierarchical query is an SQL query that handles hierarchical model data such as the structure of organizations, living species, […]

SQL trickery: Configuring window functions

by Hans-Jürgen Schönig | 05.2020
Generating simple data sets Before we get started, I want to introduce my favorite set-returning functions which can help you […]

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

by CYBERTEC Guest | 05.2020
By Kaarel Moppel The functionality of using table partitions to speed up queries and make tables more manageable as data […]

How to count hits on a website - concurrent counting in PostgreSQL

by Hans-Jürgen Schönig | 05.2020
Concurrent counting in PostgreSQL: Recently we covered “count” quite extensively in this blog. We discussed optimizing count(*) and also talked […]

PostgreSQL: now() vs. 'NOW'::timestamp vs. clock_timestamp()

by Hans-Jürgen Schönig | 05.2020
Everybody who has ever written any kind of database application had to use time and date. However, in PostgreSQL there […]

Speeding up count(*): Why not use max(id) - min(id)

by Hans-Jürgen Schönig | 04.2020
Our PostgreSQL blog about “Speeding up count(*)” was widely read and discussed by our followers on the internet. We also […]

Embedded SQL in C for PostgreSQL with ecpg

by Laurenz Albe | 03.2020
  Embedded SQL is by no means a new feature — in fact it is so old-fashioned that many people […]

Migrating from MS SQL to PostgreSQL: Uppercase vs. Lowercase

by Hans-Jürgen Schönig | 02.2020
When migrating from MS SQL to PostgreSQL, one of the first things people notice is that in MS SQL, object […]
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