Tag: data type

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

A unique constraint where NULL conflicts with everything

by Laurenz Albe | 01.2023
  I have been faced with a request for an unusual unique constraint that puzzled me for a while. Since […]

UNION ALL, data types and performance

by Laurenz Albe | 12.2022
  A while ago, I wrote about the performance impact of query parameter data types. Recently I encountered a similar […]

ERROR: nextval: reached maximum value of sequence

by Hans-Jürgen Schönig | 09.2022
serial is a popular pseudo data type in PostgreSQL which is often used to generate auto-increment columns. However, this can […]

Time zone management in PostgreSQL

by Laurenz Albe | 05.2022
  Next to character encoding, time zones are among the least-loved topics in computing. In addition, PostgreSQL's implementation of timestamp […]

Multiranges in PostgreSQL 14

by Hans-Jürgen Schönig | 04.2022
Understanding Multiranges Range types have been around in PostgreSQL for quite some time and are successfully used by developers to […]

Query parameter data types and performance

by Laurenz Albe | 03.2022
  Recently, I could help solve a “mysterious” performance problem for a customer. The problem turned out to be a […]

Practical Examples of Data Normalization in PostgreSQL

by Michał Małecki | 01.2022
Normalization by Osmosis Part 2: Practical Examples of Data Normalization in PostgreSQL Having gone through a theoretical introduction in part […]

Data Normalization in PostgreSQL

by Michał Małecki | 01.2022
Normalization by Osmosis Part 1: A Guide to Data Normalization in PostgreSQL  By Michał Małecki Introduction Although I installed my […]

Fixing out-of-sync sequences in PostgreSQL

by Hans-Jürgen Schönig | 08.2021
Creating auto increment columns in PostgreSQL is easy. Simply use two pseudo data types serial and serial8, respectively, then PostgreSQL […]

Cleaning up a large number of BLOBs in PostgreSQL

by Hans-Jürgen Schönig | 04.2021
PostgreSQL allows end users to store BLOBs (binary large objects) in the database. Many people use these functions to handle […]
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