How to Use HierarchyID Data Type in SQL Server

How to Use HierarchyID Data Type in SQL Server

What is the HierarchyID Data Type? Hierarchical data is a common type of data that represents the relationships between entities in a tree-like structure. For example, you may have hierarchical data for your organizational structure, where each employee has a manager...
Indexing for Group By and Order By in SQL Server

Indexing for Group By and Order By in SQL Server

What is Indexing? Indexing is a technique to optimize the selection and sorting of data in a database. An index is a data structure that stores a subset of columns from a table or a view, along with pointers to the corresponding rows. The database can use an index to...