Tag: SQL

Learn core tables like wp_posts, wp_users, wp_postmeta, and wp_options.

Run safe custom queries with $wpdb->prepare, get_results, and insert helpers.

Practice common SQL interview questions with clear answers.

Practice progressively harder queries on a sample schema.

Design and query a realistic domain schema end-to-end.

Capstone: design, implement, secure, and query a complete relational database system for a real domain.

Connect Node apps with mysql2/postgres clients using placeholders.

Understand when to use WP APIs vs direct SQL in WordPress.

Harden database access, secrets, and privilege scope.

Create database users and assign only required privileges.