본문으로 바로가기

강의

Transactions and Error Handling in SQL Server

중급기술 수준

업데이트됨 2025. 1.

Learn to write scripts that will catch and handle errors and control for multiple operations happening at once.

무료로 강의 시작

SQLProgramming4시간14 동영상52 연습 문제3,850 XP15,986성취 증명서

무료 계정을 만드세요

또는

계속 진행하시면 당사의 이용약관, 개인정보처리방침 및 귀하의 데이터가 미국에 저장되는 것에 동의하시는 것입니다.

수천 개 기업의 학습자들이 사랑하는

2명 이상을 교육하시나요?

DataCamp for Business 체험

강의 설명

It is critical to know how to handle errors and manage transactions when programming SQL scripts. Unhandled errors can be very harmful and can cause unexpected situations, such as inconsistent data in your database, or even worse, errors can lead you to make wrong business decisions. In this course, you will learn how to handle errors and discover how to manage transactions in case of an error. Additionally, you will study what happens when two or more people interact at the same time with the same data. You will practice all these concepts using two datasets, one of them based on bank accounts and the other one on an electric bike store.

선수 조건

Intermediate SQL Server

1

Starting with error handling

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.

The TRY...CATCH syntax

Your first error-handling script

Nesting TRY...CATCH constructs

Error anatomy and uncatchable errors

Anatomy review

Correcting compilation errors

Giving information about errors

Error function syntax

Using error functions

Using error functions in a nested TRY...CATCH

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.

RAISERROR syntax

CATCHING the RAISERROR

THROW with or without parameters

THROW without parameters

Executing a stored procedure that throws an error

THROW with parameters

Customizing error messages in the THROW statement

Ways of customizing error messages

Concatenating the message

FORMATMESSAGE with message string

FORMATMESSAGE with message number

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.

Transactions

Transaction statements

Correcting a transaction

Rolling back a transaction if there is an error

Choosing when to commit or rollback a transaction

@@TRANCOUNT and savepoints

Modifiers of the @@TRANCOUNT value

Checking @@TRANCOUNT in a TRY...CATCH construct

Using savepoints

XACT_ABORT & XACT_STATE

XACT_ABORT behavior

XACT_ABORT and THROW

Doomed transactions

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.

Transaction isolation levels

Concurrency phenomena

Using the READ UNCOMMITTED isolation level

READ COMMITTED & REPEATABLE READ

Choosing the correct isolation level

Prevent dirty reads

Preventing non-repeatable reads

SERIALIZABLE isolation level

Prevent phantom reads in a table

Prevent phantom reads just in some rows

Setting READ COMMITTED SNAPSHOT to ON

Comparing WITH (NOLOCK) & READ UNCOMMITTED

Avoid being blocked

Congratulations!

Transactions and Error Handling in SQL Server

강의
완료

수료증 획득

LinkedIn 프로필, 이력서 또는 CV에 이 자격증을 추가하세요
소셜 미디어와 성과 평가에서 공유하세요지금 등록

19백만 명 이상의 학습자와 함께 Transactions and Error Handling in SQL Server을(를) 시작하세요!

무료 계정을 만드세요

또는

계속 진행하시면 당사의 이용약관, 개인정보처리방침 및 귀하의 데이터가 미국에 저장되는 것에 동의하시는 것입니다.

DataCamp for Mobile을 통해 데이터 분석 능력을 향상시키세요.

모바일 강좌와 매일 5분 코딩 챌린지를 통해 이동 중에도 학습 효과를 높이세요.