From 54709754c7af46d4cc27fd900e4e1cd0f05081f6 Mon Sep 17 00:00:00 2001 From: Thomas Hohn <thomas@hohn.dk> Date: Wed, 8 Feb 2017 20:32:31 +0100 Subject: [PATCH] [TASK] Better index on sys_log Looking at the selects performed on sys_log in the core of TYPO3 reveals that a combination of tstamp, type, userid should giver a better performance for at least 2 SQL statements. One performing a full-table scan - the other approximately half a full-table scan. On installations where a few users have created a lot of entries in sys_log the existing indexes event and user_auth will return too many rows compared to the new combined index. Especially the method printLogErrorMessages in the DataHandler benefits from this index. Resolves: #79696 Releases: master Change-Id: I3e115b8b5a3cc9cd134d0cc995a06488134be40d Reviewed-on: https://review.typo3.org/51595 Tested-by: TYPO3com <no-reply@typo3.com> Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch> Tested-by: Christian Kuhn <lolli@schwarzbu.ch> Reviewed-by: Georg Ringer <georg.ringer@gmail.com> Tested-by: Georg Ringer <georg.ringer@gmail.com> --- typo3/sysext/core/ext_tables.sql | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/typo3/sysext/core/ext_tables.sql b/typo3/sysext/core/ext_tables.sql index 666c751412d1..60f77c313fa7 100644 --- a/typo3/sysext/core/ext_tables.sql +++ b/typo3/sysext/core/ext_tables.sql @@ -619,7 +619,8 @@ CREATE TABLE sys_log ( KEY event (userid,event_pid), KEY recuidIdx (recuid,uid), KEY user_auth (type,action,tstamp), - KEY request (request_id) + KEY request (request_id), + KEY combined_1 (tstamp, type, userid) ) ENGINE=InnoDB; # -- GitLab