how to clean database

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i have a lot of “old” variables values in my pimatic database which i do not need anymore (because a lot of testing and adding different kind of variables)
is it possible to clean this or how can i delete the hole database?
(i dont have this variables in my config anymore)

cheers

@dk00000 If you are fine with starting a new emtpy database, just stop pimatic , delete the .sqlite file in the pimatic-app folder and start pimatic.

what do i lose?
just the historical values?

Jup, only collected data, not your settings or GUI layout.

if you want to edit the database go for sqlitebrowser
check this threat here https://forum.pimatic.org/topic/168/solved-with-database-tool-temperature-graph-broken-because-of-incorrect-3000-c-value/2

but always copy your database first before changing something, but i guess mentioning this is not neccesary