Beginning T-SQL 2012

C H A P T E R  6

Manipulating Data

The data stored in most databases is not static. The application users constantly add data to tables as customers place orders, the company hires employees, and the payroll department writes checks. Automated processes periodically load new data into reporting databases, such as data warehouses, and into production systems. Users and processes also update existing rows or delete rows from tables.

In Chapters 1 through 5, you learned how to retrieve data from SQL Server. These skills are important for generating reports and displaying data. These skills will come in handy as you learn to insert new rows, update the values in existing rows, and delete rows from tables. This chapter covers how to manipulate data ...