Product articles
Using SQL Monitor to Detect Problems on Databases that use Snapshot-based Transaction Isolation
Use of the read committed snapshot isolation level is often an effective way to alleviate blocking problems in SQL Server, without needing to rewrite the application. However, it can sometimes lead to tempdb contention. This article offers a small-scale solution (not suitable for use on large tables) to detect cases when tempdb contention is related to use of RCSI. Read more
When to use the SELECT…INTO statement (PE003)
SELECT…INTO is a useful shortcut for development work, especially for creating temporary tables. However, it no longer has a clear performance advantage and should be avoided in production code. It is better to use a CREATE TABLE statement, where you can specify constraints and datatypes in advance, making it less likely that inconsistencies will sneak into the data. Read moreBeyond Formatting: Improving SQL Code using SQL Prompt Actions
How to qualify object names, standardize the use of aliases, and make other instant changes that improve the quality and performance of your SQL code. Read moreMonitoring and Troubleshooting Deadlocks with Redgate Monitor
This article explains what SQL Server deadlocks are, why they occur, why they require immediate investigation, and the diagnostic data required to troubleshoot them. It then demonstrates an "Update Order" deadlock condition and shows how to find the cause quickly, in Redgate Monitor, using the Extended Events deadlock graph provided by the deadlock alert. Read moreDriving up database coding standards using SQL Prompt
A strategic view of how a development team can use SQL Prompt to establish and share coding standards, through code analysis rules, formatting styles and code snippets. Read moreRedgate’s support for Azure SQL Database Managed Instances
Today Microsoft released the public preview of Azure SQL Database Managed Instances – an exciting new option for running SQL Server workloads in the cloud. I’m pleased to say that initial support for this new offering is already available across the development tools in Redgate’s SQL Toolbelt, as well as in SQL Monitor. This support Read moreInvestigating problems with ad-hoc queries using SQL Monitor
Phil Factor demonstrates the performance problems that overuse of ad-hoc queries can cause and then how SQL Monitor can warn us when they are the cause of these problems on your SQL Servers, using built-in metrics such as SQL Compilations/sec metric and Batch Requests/sec. Read moreConsider using [NOT] EXISTS instead of [NOT] IN with a subquery (PE019)
Phil Factor explains why you should prefer use of EXISTS over IN, when comparing data sets using a subquery. While there is no longer any significant performance advantage, using NOT EXISTS will avoid unexpected results when the subquery’s source data contains NULL values. Read moreMasking Dates in a Non-Production Database
Gerry Leith explores what’s required for the effective masking of dates and times in your data. Read moreRedgate Hub
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