SQL Interview | +150 SQL Interview Questions in 2020

Learn to create and drop tables, insert data, and perform basic queries using select, update, and delete, with simple constraints and primary keys.

Master practical SQL querying by selecting data with where clauses, filtering revenue and salary, using between and not, combining with or, and pattern matching starts with or ends with.

Explains 20–30 simple SQL queries, including like pattern matching, distinct values, joins and alternatives, set multiplication, except, not equals, renaming columns, and salary filters.

Master advanced sql queries with practical joins between customers, orders, employees, order details, and products; identify customers with no orders and products never bought.

Explore advanced SQL queries that join customers, orders, order details, and products to reveal purchases. Extend to categories, shippers, and employee order relationships with filtering.

Learn to fetch the most expensive products by price using max(price), sort descending, and use limit and offset to obtain the second and top five, listing name and price.

Demonstrate expert sql queries to find cheapest product name using a with clause, count employees whose last name starts with d, show customers with order counts, and sum product prices.

Learn expert sql queries to compute order totals by joining order details, products, and customers, then identify top spenders (including London customers) and the leading shipper by total sales.