One of the main purposes of placing a database under source control, alongside the application code, is to allow team collaboration during development projects. The Version Control System (VCS) stores and manages all of the project files, maintaining an audit trail of what changed, and who made the change. Each team member can work on a file, or set of files, and submit their changes to the VCS to make them available to other team members. They can also inspect the VCS to discover recent changes made by other team members.
Tony Davis answers 10 surprisingly tricky questions about SQL Server Transaction Log.
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One of the most important SQL Server DBA tasks is checking logical hard drive details such as the total capacity, free disk space, and used space by the SQL Server data and log files. In this tip we look at a method to view this information in a faster and simpler way.
Learn how to do SQL Server continuous integration at the first in a new series of Database Lifecycle Management Training Workshops, in Silicon Valley on March 27. To celebrate the launch, places for this workshop are free.
We frequently need to discover the source of issues with our databases. This article provides information on how to detect replication on a database as a possible source of issues.
In a guest post, Rodney Landrum ponders the gaps in his DBA experience at the edge of Lake Erie.
How often do you check your query plans to see if they contain any warnings? If you're missing them, it means that you're not getting all those hints about missing indexes, join predicates or statistics. Is the query optimiser trying to tell you about implicit conversions? Dennes shows how to view the warnings in plan cache for a particular database using SQL.
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I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers