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  3. Transactions and Error Handling in SQL Server
  • 1

    Starting with error handling

    Free

    To begin the course, you will learn how to handle errors using the TRY...CATCH construct that provides T-SQL. You will study the anatomy of errors, and you will learn how to use some functions that can give you information about errors.

  • 2

    Raising, throwing and customizing your errors

    In this chapter, you will deepen your knowledge of handling errors. You will learn how to raise errors using RAISERROR and THROW. Additionally, you will discover how to customize errors.

  • 3

    Transactions in SQL Server

    In this chapter, you will be introduced to the concept of transactions. You will discover how to commit and rollback them. You will finish by learning how to return the number of transactions and their state.

  • 4

    Controlling the concurrency: Transaction isolation levels

    This chapter defines what concurrency is and how it can affect transactions. You will learn exciting concepts like dirty reads, repeatable reads, and phantom reads. To avoid or allow this reads, you will explore, one by one, the different transaction isolation levels.

Initializing

Exercise

Using savepoints

Your colleague Anita needs help. She prepared a script that uses savepoints, but it doesn't work. The script marks the first savepoint, savepoint1 and then inserts the data of a customer. Then, the script marks another savepoint, savepoint2, and inserts the data of another customer again. After that, both savepoints are rolled back. Finally, the script marks another savepoint, savepoint3, and inserts the data of another customer.

Anita tells you that her script doesn't work because it has some errors, but she doesn't know how to correct them. Can you help her?

Instructions

100 XP
  • Run the code to verify there are errors.
  • Correct every error.