This document lists 30 common MySQL interview questions and their answers. It covers topics such as data definition language (DDL), data manipulation language (DML), data control language (DCL), primary keys, foreign keys, indexes, joins, unions, data types, transactions, commits, rollbacks, escaping special characters, concatenating strings, entering boolean and numeric values, using IN and LIKE conditions, incrementing and calculating dates, adding, deleting, and renaming columns and tables, and creating and listing table indexes.