2023-11-15
390 reads
T-SQL
2023-11-13
418 reads
2023-11-10
514 reads
2023-11-08
449 reads
Don’t use DISTINCT as a “join-fixer”
I’ve quietly resolved performance issues by re-writing slow queries to avoid DISTINCT. Often, the DISTINCT is there only to serve as a “join-fixer,” and I can explain what that means using an example.
2023-11-06
2023-11-06
410 reads
2023-11-03
661 reads
2023-11-01
340 reads
Normalize strings to optimize space and searches
While this article is specifically geared to SQL Server, the concepts apply to any relational database platform. The Stack Exchange network logs a lot of web traffic – even compressed, we average well over a terabyte per month.
2023-11-01
2023-10-30
497 reads
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A Quick Restore
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Guarding Against SQL Injection at the Database Layer (SQL Server)
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Ola Hallengren Index Optimize Maintenance can we have data compression = page
I have a quick question on Ola Hallengren Index Optimize Maintenance . Do we...
Question of the Day
A Quick Restore
While doing some testing of an application, I wanted to reset my environment after doing some testing with this code:
USE DNRTest BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak' GO /* Bunch of stuff tested here */RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACEWhat happens if this runs, assuming the "bunch of stuff" isn't anything affecting the instance. See possible answers