MySQL

MySQL SELECT, JOINs, aggregates, DDL, indexes, stored procedures, and JSON functions—interview SQL practice.

459 problems in 9 categories

MySQL — SELECT basics

MySQL — WHERE & filtering

MySQL — JOINs

MySQL — Aggregates & GROUP BY

MySQL — Subqueries

MySQL — DDL & constraints

MySQL — Indexes & EXPLAIN

MySQL — String & date functions

MySQL — Stored procedures

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