How to Implement Row and Column Level Security in SQL Server

SQL Server includes a range of security features. Two of the most valuable are column level security and row level security, which enable you to granularly grant users access to rows and columns in a table. This article explains how to implement these features in your environment.

Before we can dive into rows and column security, we need to review some SQL Server security basics. Basically, database security involves allowing someone to access a data stored in a database and perform actions on it. The “someone” a principal, the actions they is allowed to take are their permissions, and the data on which the actions are performed is a securable — examples of securables include databases, tables, schemas, rows and columns.
Let’s take a look at the permissions that can be applied to securables:
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