UPDATE: Use WP-CLI find-replace command to edit URLs in your database. https://developer.wordpress.org/cli/commands/search-replace/ Use this SQL script when changing domains on a WordPress site. Whether you’re moving from an old domain to a new domain or you’re changing from a development domain to a production domain this will work. __STEP1: al…

wordpress-change-domain-migration.sql

/* Use WP-CLI instead https://developer.wordpress.org/cli/commands/search-replace/ */

SET @oldsite='http://oldsite.com'; 
SET @newsite='http://newsite.com';
UPDATE wp_options SET option_value = replace(option_value, @oldsite, @newsite) WHERE option_name = 'home' OR option_name = 'siteurl';
UPDATE wp_posts SET post_content = replace(post_content, @oldsite, @newsite);
UPDATE wp_links SET link_url = replace(link_url, @oldsite, @newsite);
UPDATE wp_postmeta SET meta_value = replace(meta_value, @oldsite, @newsite);

/* only uncomment next line if you want all your current posts to post to RSS again as new */
#UPDATE wp_posts SET guid = replace(guid, @oldsite, @newsite);

The procedure proposed by @jaircuevajunior is quite straightforward, however it will only fully work if the former URL and the new one have the same length. Therefore I suggest that you keep this in mind if, for example, you're working on a test version and plan to move to production.

When the lengths differs, you need to use a more sophisticated script that takes into consideration variable serialization frequently used in WordPress database.
For this, I've used successfully a few times a script developed by Interconnect/IT (it's free but you need to complete a form to get it).
[link removed]

Thanks!

You could use this tool to generate your sql script : [link removed]

What everybody SHOULD use anymore is WP-CLI Find/Replace. End of conversation. https://developer.wordpress.org/cli/commands/search-replace/

I couldn't agree more but:

• wp cli is not available on all hosting services
• using a command line tool is not possible for the majority of users

that's why extensions and tools exist