Deardurff





Using GROUP BY and HAVING

In this post, we discuss how to use the GROUP BY and HAVING clause in a T-SQL statement and how to use them with aggregate functions.



Table Constraints

Restricting data by using Table Constraints in SQL Server. What are the different table constraints in SQL Server?


Tables and Relationships

Understanding the difference between Parent Tables and Child Tables and the difference between Primary Keys vs Foreign Keys.



What is a Schema?

The term schema could mean several different things. What are the different meanings and how are schemas are used in SQL Server.