Database Normalization

Find the third highest salary in a table.
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To find the third highest salary in a table, you can use a simple ORDER BY and LIMIT clause in SQL.

170
Nov 19
Finding the average price of products in the "Electronics" category
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The goal is to find the average price of all products in the "Electronics" category. To do this, we can write a SQL query that returns the average price of all products in the "Electronics" category.

166
Nov 18
Find the Second Highest Salary in a Table
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This technical problem involves finding the second highest salary in a table. An example input and output is provided.

117
Nov 14
Query to find all products that cost more than $10
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This technical problem deals with finding all products that cost more than $10 from a list of products and their prices.

187
Nov 08
Normalizing a Library Database
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A library database needs to be normalized in order to improve efficiency and data integrity. The library_id, book_id, and user_id fields need to be included in separate tables with the corresponding shelf, title, author, checkout_date, and due_date fields.

160
Nov 06
Find the average price of all products in a database table.
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Write a SQL query to find the average price of all products in a database table.

178
Nov 04
Get Total Revenue for Each Customer
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This technical problem involves writing a SQL query that returns the total revenue for each customer. The table schema is provided, and an example input and output are also given.

168
Nov 01
Total product quantity ordered by customer
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Write a SQL query that returns the total quantity of each product ordered by each customer.

152
Oct 31