Connect to MySQL and view tables to see what you need
USE <DB_NAME>; SHOW TABLES;
Grab site URLs
SELECT * FROM wp_options WHERE option_name = 'home'; SELECT * FROM wp_options WHERE option_name = 'siteurl'; **NOTE** Multisite setups are different. Each site has their own set of wp_options, depending on your site, it may be set to different numbers. Typically, it will be wp_2_options, wp_3_options, etc.
Replace values with what you want
UPDATE wp_options SET option_value="http://new_host/wordpress" WHERE option_name = "home"; UPDATE wp_options SET option_value="http://new_host/wordpress" WHERE option_name = "siteurl"; **NOTE** For multisite setups, make sure your wp_options match the number for the site in question.