Oracle optimizer Or Expansion Transformations

The previous installment of this series examined aggregate subquery removal and subquery coalescing, describing the latter as similar in some ways to an inverse for “Or Expansion” and “Join Factorization”. In this instalment, it’s time to take a closer look at Or Expansion and we’ll move on to Join Factorization in the next instalment.

Webinar | Test Data Management

With the average data breach costing $4.35 million, Test Data Management (TDM) is crucial. In this session, we’ll demonstrate how TDM can reduce your risk by achieving scalable compliance without slowing down your database development process. Watch on demand now.

New Flyway Course on Redgate University

SQL Server at Scale - Using an Archive Table - Part 2

In my previous tip, I explained how we are inclined to use archive tables and how they become increasingly problematic over time. This tip will focus on ways to mitigate the issues.

Is Azure SQL Database a Good Choice for your Database Applications?

In this article, we cover things you should know about Azure SQL Database and why this may be a good choice for your database applications.

Why bother automating?

Bob Pusateri, Database Engineering Lead at Salesforce, joined our recent Summit to discuss how automation can enable digital transformation. Listen in full.

Introducing the MySQL UPDATE statement

In the previous two articles in this series, you learned about SELECT and INSERT, two important data manipulation language (DML) statements in MySQL. In this article, I focus on the UPDATE statement, another valuable DML statement in MySQL.

Using SQL Backup in Development Work

For a development team, SQL Backup provides a simple way to restore development or test databases, if required, while minimizing the tedium of the task of taking, managing, and restoring the backups. We can generate the required backup commands in the GUI and then use them to construct a SQL script that backs up all the required databases. We can even use the backup commands in a beforeMigrate SQL callback, in Flyway, to make sure the current version is safely backed up before we run migration.

An Introduction to SQL Triggers

Learn about SQL Server triggers and how to use them for inserts, updates, and deletes on a table, along with step-by-step examples.

New Flyway Course on Redgate University

Flyway Desktop is the newest way to automate database deployments. In this brand new course Kathi Kellenberger provides an overview of DevOps, including definitions, tools, and demos of some of the advanced features available in Flyway Desktop.