💡 WordPress uses MySQL as its database management system. WordPress database is where all of the necessary website data is stored. Not just the basic information like usernames and passwords but posts, pages and comments, even the website theme and WordPress configuration settings.
Here you can find various SQL snippets and PHPMyAdmin tips.
Here is how to add table indexes, keys, and auto_increment fields to WordPress core database tables. These commands will fix the following database errors caused by missing primary keys: ⚠️ NOTE: Before running any of the following commands make sure to create a backup of the database. This commands will only fix your WordPress Core … Read full article →
Here are five different methods to create a new WordPress Admin user. In all of the examples below I will use the following username/password combination, so make sure to change it before running any of the commands: username123 change username123 with your username password123 change password123 with your password [email protected] change [email protected] with your email … Read full article →
After a plugin is deinstalled from a WordPress website it will either remove all its data from the database or leave it in case the plugin is installed again. Upon deactivation, if the plugin’s data isn’t removed from the database you should manually remove it in order to optimize the database and get rid of … Read full article →
In this post I discussed an example where wp_options table had 900k rows of plugin-based data in it, causing the wp-admin dashboard to load slowly. As noted there, good coding practice is for each plugin to create its own database tables and use those instead of default WP tables. While the WordPress community actively improves … Read full article →
Instruction: Parameter PARAMETER TYPE DESCRIPTION DEFAULT REQUIRED $format string Output can be PHP date format or Unix timestamp. no yes $date string mysql2date() only recognizes “Ymd H:i:s” format, so the original timestamp string needs to be converted to this format. no yes $translate boolean If true, the specified date and format string will be passed … Read full article →
wp_postmeta table should be the biggest table in your database, if not, there is a problem. Read wp_actionscheduler_actions & wp_actionscheduler_logs tables When you install WordPress for the first time, tables are created in the database, for example for the wp_postmeta table: the problem? solution: On an existing tables, We can add high-performance keys that match … Read full article →
![max connections - ⚠️ User already has more than 'max_user_connections' active connections [✅ SOLVED]](https://wpxss.com/application/wp-content/webp-express/webp-images/uploads/2022/09/max-connections.png.webp "⚠️ User already has more than 'max_user_connections' active connections [✅ SOLVED]")
Noticed a lot of Crawler errors on the Google Adsense console: So I enabled the WP_DEBUG and run a stress test with vegeta on the website: the website became unavailable and the following error was shown: User already has more than ‘max_user_connections’ active connections This explains the errors in Google SC because the crawler most … Read full article →
![WordPress database error Table .dbwp options is marked as crashed and should be repaired - WordPress database error Table './db/wp_options' is marked as crashed and should be repaired [✔️ SOLVED]](https://wpxss.com/application/wp-content/webp-express/webp-images/uploads/2022/10/WordPress-database-error-Table-.dbwp_options-is-marked-as-crashed-and-should-be-repaired.png.webp "WordPress database error Table './db/wp_options' is marked as crashed and should be repaired [✔️ SOLVED]")
Here are 4 different methods to fix the scary-looking error: “WordPress database error Table ‘./db/wp_options’ is marked as crashed and should be repaired”. NOTE: It is critically important that you backup your database before performing any of the following suggestions. You’re fully responsible for undertaking this yourself, I can’t be held responsible if you break … Read full article →
DO_NOT_UPGRADE_GLOBAL_TABLES is a WordPress constant that can be added to the wp-config.php file in order to avoid the upgrade functions from doing expensive queries against global tables. To enable it, simply add the following to your wp-config.php file: WordPress websites that use bbPress have large users and usermeta tables. When upgrades are running, ALTER, DELETE … Read full article →
This simple query allows you to transfer all posts from one user to another. SQL query This will assign all posts from author ID=14 to the user with ID=1 (admin). WP-CLI This will remove the user [email protected] and assign all his posts to user with ID=1 (admin).