How to store a ranked (sortable) list in a database

A simple idea might be an index column where you store the order from 1 to n but then when changing the order you'd potentially have to change the order for a lot of records.

Jira uses lexorank:

The index column uses chars like aaa, aaf, xxx. Now if you want to sort item xxx between aaa and bbb, you'd assign it the rank aad. If there is no space left like between acd and ace, you'd use acdm. Since you can append as many characters as you want you'll never run out of space.

Jira also uses buckets and an algorithm to rebalance the sorting column, which is explained in detail in the following video:

Relevant stackoverflow answer:

Wir freuen uns Sie kennen zu lernen

Hat Sie unser Angebot überzeugt? Dann freuen wir uns, Sie kennen zu lernen. Kontaktieren Sie uns gerne für ein unverbindliches Erstgespräch.

newcubator GmbH
Freie-Vogel-Straße 369
44269 Dortmund
+49 231/586 873 80
newcubator GmbH
Bödekerstraße 22
30161 Hannover
+49 511/957 313 00