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Recovery

How do you recover small pieces of data from a 16GB database? New author from Australia, Graham Okely, brings a story from the real world of data recovery at his employer.

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Auto generate SQL Server restore script from backup files in a directory

One of the ongoing challenges of a DBA is to backup and restore databases. Backups are done on an automated schedule, but restores can take on many different versions, you may need to restore a production database, restore a development or test database or just create another copy of the database somewhere else. There are several ways of automating the restore process and creating a script, but this approach shows a way this can be done by just reading the contents of a directory for the backup files that exist.

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Question of the Day

Getting the Average

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       NULL
All 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?

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