SQL Server performance mistakes hide in the settings, the files and the code. This post checks four server settings, shows poor file growth and its fix, and measures two code mistakes, a function on an indexed column and a data type mismatch, in logical reads.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
Do You Need an Availability Group? Matching RPO and RTO to a Feature
Match RPO and RTO to backups, log shipping, failover clusters, or availability groups, then test the full service recovery path.
SQL SERVER – Script level upgrade for database ‘master’ failed – There is already an object named ‘DatabaseMailUserRole’ in the database
After patching, script level Upgrade for master failed: there is already an object named ‘DatabaseMailUserRole’. Here is what caused it and how to fix it.
When was Database Last Backed Up in SQL Server? – Interview Question of the Week #107
When was each database last backed up? Here is the script I share in training that lists full, differential and log backup history for your server.
Currency Rates by Effective Date: Designing the Lookup Table
Why did last quarter’s invoices change overnight? Probably because the rate table had no dates. Here is a lookup that remembers.
Spotting Definition Drift With HASHBYTES on Module Code
Did someone change a production procedure and forget to tell you? Hash the module text, compare it with a baseline, and let SQL Server point at the culprit.
SQL SERVER – Understanding JSON Use is Case-Sensitive
My daughter explores every new toy, and that is how I play with JSON in SQL Server 2016. One surprise: JSON paths are case-sensitive, as this example shows.
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