Articles on SQL, TSQL and Management Studio. You can download Microsoft supplied sample database here:

Common Table Expression (CTE) Example
SQL Server

Sub-Queries, Derived Tables, and Common Table Expression Examples

In this example, we will explore some useful select queries that comes handy when we want to retrieve data from different tables. There many ways one can form select queries that returns the same result. For this article, we will use Microsoft’s Pubs database and explore Sub-Queries, Derived Tables and Common Table Expressions (CTE). We will explore these queries one by one.

SQL Dense Rank Example
SQL Server

Ranking Functions Examples – RANK, DENSE_RANK & Percentile

Ranking Functions are useful to provide ranking on the table columns based on the value stored in it. Say, for example, let us say a table is having students id and their Total Marks as separate columns. Now, it is meaningful if we apply the these function on the Total Marks column rather than Student ID column. With these Functions, we can easily find 2nd maximum, or 4th maximum marks. The Ranking Functions are available in SQL 2005 and later versions.