In MySQL, when defining a column, you have the option to set a default value. Whether you should set it to NULL or an empty value (0 in the case of INTEGER) depends on your specific use case and requirements. Here are the pros and cons of each approach: Setting the default value to NULL: […]
The $wpdb object is defined in the wp-includes/wp-db.php file. This file contains the class wpdb that extends the wpdb class from the db.php file. Understanding the $wpdb object and its class file is crucial for effective WordPress database operations. As you continue your WordPress journey, mastering this alongside the PHP language will empower you to
Ensure a consistent snapshot by executing this statement to lock the tables so that they cannot be modified during export: mysql> FLUSH TABLES hr.employees, hr.managers WITH READ LOCK; While the lock is in effect, the tables can still be used, but only for read access. Unlock the tables: mysql> UNLOCK TABLES;
