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.
Steve Jones has a problem with the inconsistency of the CREATE TABLE statement in SQL Server and has an idea on what to do.
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.
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.
A SQL Server database can easily be seen as a bottleneck as all data must be retrieved from a single machine. However a caching strategy in your application and alleviate load and improve performance.
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.
Steve Jones notes that a data breach resulted in a lawsuit. How long before that's a common practice, and should we be preparing as data professionals.
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.
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.
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.
If you work with data pipelines, SQL, notebooks, or machine learning models, a Mac...
By ChrisJenkins
Have you been thinking about migrating your reporting to Microsoft Fabric or Snowflake but...
The Joyful Craftsmen has become the new owner of Revolt BI. The merger creates...
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In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:
UserID UserPermissions 15 23 37What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 3;See possible answers