Some handy MySQL commands to use with WordPress.

MySQL commands can be very useful for managing a WordPress database.

Here are some handy MySQL commands that we frequently use for WordPress:

1. SHOW DATABASES;
   • This command displays all the available databases on the server.
2. USE databasename;
   • This command selects the database you want to use.
3. SHOW TABLES;
   • This command lists all the tables in the current database.
4. DESCRIBE tablename;
   • This command displays the structure of the specified table.
5. SELECT * FROM tablename;
   • This command displays all the data in the specified table.
6. SELECT columnname FROM tablename;
   • This command displays the specified column data in the specified table.
7. DELETE FROM tablename WHERE columnname = ‘value’;
   • This command deletes the row(s) with the specified value in the specified column.
8. UPDATE tablename SET columnname = ‘new value’ WHERE columnname = ‘value’;
   • This command updates the value of the specified column with the new value, for the row(s) with the specified value in the specified column.
9. ALTER TABLE tablename ADD columnname datatype;
   • This command adds a new column with the specified name and data type to the specified table.
10. DROP TABLE tablename;

• This command deletes the specified table.

It is important to note that some of these commands can be dangerous if used improperly, so it is recommended to make a backup of your database before using them.

Some of the most frequently used tables in a WordPress database are:

1. wp_posts – This table stores all the posts, pages, and other content types created in WordPress.
2. wp_users – This table stores all the registered users of a WordPress site, including their login credentials and other profile information.
3. wp_comments – This table stores all the comments made on posts and pages.
4. wp_postmeta – This table stores additional metadata associated with posts and pages, such as custom fields and post thumbnails.
5. wp_terms – This table stores the taxonomy terms used in WordPress, such as categories and tags.
6. wp_term_taxonomy – This table defines the taxonomies and their relationships with the posts and pages.
7. wp_term_relationships – This table maps the relationships between terms and posts/pages.
8. wp_options – This table stores various options and settings used by WordPress, such as site title, site URL, and active theme.

These tables are some of the most commonly used ones in a WordPress database, but there are many others that store important data as well. It is recommended to have a basic understanding of the database structure before making any changes to the tables.