课程

Transactions and Error Handling in PostgreSQL

中级技能水平

更新时间 2024年12月

Ensure data consistency by learning how to use transactions and handle errors in concurrent environments.

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SQLProgramming4 小时15 视频49 练习3,950 经验值3,652成就声明

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课程描述

Being able to leverage transactions and find and handle errors is critical to building resilient SQL scripts and working with databases. Transactions provide the protection needed to ensure that your data is consistent and operations work on the desired data in concurrent environments. Improper error handling can cause many serious and unexpected issues. Without the proper use of transactions and error handling, it's possible to make decisions based on incorrect data leading to false outcomes. In this course, we'll cover proper ways to use transactions and handle errors with a record of what went wrong. Additionally, we discuss how concurrently plays into the use of transactions and data outcomes. We'll practice these concepts on the FFEIC bank health data and with a patient data table.

先决条件

Data Manipulation in SQL

1

Getting to Know Transactions

This chapter focuses on learning about single and multistatement transactions and the read committed isolation level.

Welcome to Transactions and Error Handling in PostgreSQL

50 经验值

Transaction structure

100 经验值

Making our first transaction

100 经验值

Multiple statement transactions

100 经验值

Transaction sizes and PostgreSQL protections

50 经验值

Using and making transactions

100 经验值

Single statement transactions

100 经验值

Isolation levels

50 经验值

Selecting isolation levels

50 经验值

Using an isolation level

100 经验值

Isolation levels and transactions

100 经验值

2

Rolling Back and Savepoints

How to rollback when an error is encountered in a transaction block and setting savepoints.

Handling mistakes

50 经验值

Using rollbacks

100 经验值

Multistatement Rollbacks

100 经验值

Rolling back to a savepoint

50 经验值

Working with a single savepoint

100 经验值

Rolling back with a savepoint

100 经验值

Multiple savepoints and rollback

50 经验值

Multiple savepoints

100 经验值

Savepoints and rolling back

100 经验值

Understanding outcomes

100 经验值

Isolation levels, savepoints, and rollbacks

50 经验值

Working with repeatable read

100 经验值

Isolation levels comparison

100 经验值

Savepoint's effect on isolation levels

100 经验值

3

Handling Exceptions

In this chapter, you'll learn about exceptions and how to handle them.

Catching exceptions

50 经验值

Writing do statements

100 经验值

Using exception handling wisely

50 经验值

Handling exceptions

100 经验值

Rollbacks, savepoints, and exceptions

50 经验值

Multiple exception blocks

100 经验值

Understanding rollbacks and savepoints

50 经验值

Specific exception handling and messages

50 经验值

Capturing specific exceptions

100 经验值

Logging messages on specific exceptions

100 经验值

Graceful exception handling

50 经验值

When to use graceful degradation

100 经验值

Graceful degradation

100 经验值

4

Stacked Diagnostics

With stacked diagnostics, you can get all the information available from PostgreSQL about an exception.

Enhancing exception handling with stacked diagnostics

50 经验值

Getting stacked diagnostics

100 经验值

What data is available in stacked diagnostics

50 经验值

Hints to help handle nested exceptions

50 经验值

Capturing a context stack

100 经验值

When to add custom exception logging and recording

100 经验值

Mixing it all together with debugging functions

50 经验值

Creating named functions and declaring variables

100 经验值

Structure of stacked diagnostics function

100 经验值

Putting it all together

100 经验值

Wrapping it up

50 经验值

Transactions and Error Handling in PostgreSQL

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