Occasionally I come across UPDATE and DELETE statements where the target SQL Server table is referenced with the NOLOCK hint. Does this hint help or hurt performance in this case?
2014-03-03
4,698 reads
SQL Saturday is coming to Exeter on March 22, 2014. Join Red Gate's David Atkinson and the rest of the speakers at this free day of SQL Server training and networking, organized by SQL South West.
2014-03-03
1,737 reads
Come see Grant Fritchey and Steve Jones (from Red Gate Software) and many more SQL Server experts while you enjoy spring in Orlando, FL at SQL Intersection.
2014-02-28
405 reads
There are a number of real-life reporting tasks in SQL that require a 'gaps and islands' analysis. There are a number of techniques around that work, but finding ones that scale well makes for a tougher, but interesting, challenge.
2014-02-28
3,824 reads
This article will help us identify the backup which was used to restore the database. This may seem simple when the database backup is from the same server but the complications begin when the backup is not from the same server.
2014-02-27
4,364 reads
In this tip, Sadequl Hussain will try to list a few areas DBAs need to cover when they are designing new systems or reviewing proposed solutions.
2014-02-27
5,421 reads
Views are a valuable tool for the SQL Server Developer, because they hide complexity and allow for a readable style of SQL expression. They aren't there for reasons of performance, and so indexed views are designed to remedy this shortcoming. They're great in certain circumstances but they represent a trade-off, and they come with considerable 'small print'. Jes Borland explains.
2014-02-26
4,674 reads
The day before SQL Saturday Silicon Valley, SQL Server MVP Steve Jones will be hosting a free seminar in San Jose on March 14 2014. Join fellow database professionals to learn best practices and practical tips for SQL Server version control, continuous integration and deployment.
2014-02-25
1,782 reads
A common method to detect if a row has changed is to compare hashes. Integration Services itself doesn’t have a hash implementation, so in this tip I’ll show how you can implement a hash detection mechanism using a script component, as an alternative to the pure T-SQL solution.
2014-02-25
3,416 reads
sp_ExecuteSQL can be used to dynamically execute T-SQL code. Learn how to use it and how to add parameters to control what code is executed.
2014-02-24
10,551 reads
By Steve Jones
We’re a week late, once again my fault. I was still coming out of...
By Steve Jones
I ran across this article recently (https://www.gatesnotes.com/meet-bill/source-code/reader/microsoft-original-source-code) and it has a great opening piece...
By Steve Jones
I’m in the UK today, having arrived this morning in London. Hopefully, by this...
Comments posted to this topic are about the item Learning From Breakage
Comments posted to this topic are about the item Python in Action to Auto-Generate...
Comments posted to this topic are about the item Adding and Dropping Columns I
I have this table in my SQL Server 2022 database:
CREATE TABLE [dbo].[CityList] ( [CityNameID] [int] NOT NULL IDENTITY(1, 1), [CityName] [varchar] (30) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ) ON [PRIMARY] GOI decide to add two new columns for the StateProvince and Country. What code should I use? See possible answers