How to control the database using the global object $wpdb in WordPress - Websitestools
How to control the database using the global object $wpdb in WordPress - Websitestools
Check if Table or Column already exists in Database? - Kodementor
Creating Tables in WordPress Database on Plugin Activation
Understanding and using $wpdb object in WordPress - Designmodo
Creating a table in WordPress using the Wizard - wpDataTables - Tables and Charts WordPress Plugin
How to insert data to WordPress database using PHP code – Zen Invader
How to get last inserted row ID from WordPress database? - Intellipaat Community
False positive: Use placeholders and $wpdb->prepare() · Issue #508 · WordPress/WordPress-Coding-Standards · GitHub
wpdb - How to update a row in a table in Wordpress - WordPress Development Stack Exchange
WordPress Post ID: What It Is + How to Find It
php - WPDB not working, SQL query works in phpmyadmin - Stack Overflow
php - wpdb->update not working with custom table - Stack Overflow
php - Why can't I return a value from $wpdb->get var? - WordPress Development Stack Exchange
WordPress database access with $wpdb - IT Blog
WordPress】wpdbクラスでデータベースからデータを取得する例
php - Wordpress: Using get_current_user_id() Inserted into my WPDB table - Stack Overflow
Gravity Forms - WPDB / MySQL Connect by naranili | CodeCanyon
Example Code To Simplify Your Imports and Exports - WP All Import
WordPress】$wpdbでデータを挿入（insert）する方法！【データベース、MySQL】 | grandstream blog
