Commit 2b950014 authored by Sid Sijbrandij's avatar Sid Sijbrandij

Merge branch 'sh-add-mysql-query-notes' into 'master'

Add notes about database performance for MySQL

See merge request !13516
parents 1c874f71 05705214
......@@ -104,6 +104,10 @@ features of GitLab work with MySQL/MariaDB:
See [issue #30472][30472] for more information.
1. GitLab Geo does [not support MySQL](
1. [Zero downtime migrations][zero] do not work with MySQL
1. GitLab [optimizes the loading of dashboard events]( using [PostgreSQL LATERAL JOINs](
1. In general, SQL optimized for PostgreSQL may run much slower in MySQL due to
differences in query planners. For example, subqueries that work well in PostgreSQL
may not be [performant in MySQL](
1. We expect this list to grow over time.
Existing users using GitLab with MySQL/MariaDB are advised to
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