70-461 Session 7: Querying Microsoft SQL Server (T-SQL code)

About This Course

SQL Transactions, DMVs and Cursor. For SQL Server 2012, 2014, 2016, 2017, 2019 and 2022.

This course is the foundation for the Microsoft Certificate 70-461: "Querying Microsoft SQL Server 2012/2014". Please note - this certificate is no longer being offered by Microsoft. However, the exam requirements allow you to have a good understanding of T-SQL.

Welcome to Session 7 of this T-SQL course. In this session:

• We will be looking at transactions, seeing how to explicitly start and end them, and finding out how they can block other users in the database.

• Then we'll see about how to create clustered and non-clustered indexes and heaps, and their role in optimising queries. 

• We'll also see how we can use Dynamic Management Views to see how we can improve our use of indexes. 

• We'll then look at how to write a cursor, and when to use this row-based operation, and

• The impact of using scalar UDFs.

No prior knowledge other than what we covered in Sessions 1 to 6 is required. This course builds on the knowledge previously gained in those previous sessions.

There are regular quizzes to help you remember the information.

Once finished, you will know what how to create transactions, indexes, cursors, XML data and more, and we'll have expanded on our current knowledge of T-SQL.

• Learn about transactions, why they are important, and how you can use this.

• Optimise queries, so that your database runs faster

• Evaluate the use of row-based operations vs. set-based operations