XF 1.2 How to change the language for all users?

[QenTox]

I guess this can be done with SQL Injection. What is the command please? I recently moved my site to XenForo from phpBB3 and even though I have select default language Slovak, most of the users have English as default. They seems to be lost and don't know where to change the language. So I wonder how could I change the language to Slovak for all users?

 

[Paul B]

If you don't plan to use the English (US) language, you can delete it.

Otherwise:

UPDATE xf_user SET language_id = 2;

Change the 2 to match the language.

Take a backup first.

 

[aiman.h.kallaf]

lat time i did this , i couldn't enter the acp and i had to re build the cashes and restore the english language .. etc
as Brogan said DO take a backup first

 

[QenTox]

Ehm, ok, I think I just then delete english, seems to be safer Thanks to both of you