How to change a WordPress theme through MySQL

To change the WordPress theme via MySQL, first see what theme is specified at the moment, for this, execute the SQL query via phpMyAdmin or MySQL client:

SELECT * FROM wp_options
WHERE option_name = 'template'
OR option_name = 'stylesheet'
OR option_name = 'current_theme';

Next, see what themes are in the /wp-content/themes/ directory.

For example, to change to the standard Twenty Fifteen theme, let’s execute three SQL queries:

UPDATE wp_options SET option_value = 'twentyfifteen' WHERE option_name = 'template';
UPDATE wp_options SET option_value = 'twentyfifteen' WHERE option_name = 'stylesheet';
UPDATE wp_options SET option_value = 'Twenty Fifteen' WHERE option_name = 'current_theme';