A reader’s 80 core server was not using all cores in SQL Server. Here is how to spot CPU schedulers offline and the usual reasons behind them.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
SQL SERVER – Basic architecture of Transaction Logs
The SQL Server transaction log works like a string of log records, each with an LSN. My simple notes on the basic architecture of transaction logs.
Interview Question of the Week #038 – What is Left Semi Join Showplan Operator?
Understand the left semi join showplan operator with EXISTS, compare anti and inner joins, and inspect graphical-plan properties.
SQL SERVER – How to Restore Corrupted Model Database from Backup?
SQL Server would not start due to a corrupted model database with error 5125. Here is how to restore a corrupted model database from backup the right way.
SQL SERVER – Failed Rule “Valid DSN” and “Valid Database compatibility level and successful connection”
Upgrading SQL Server 2016 CTP2.2 to CTP2.3, setup failed the rules Valid DSN and Valid Database compatibility level for Reporting Services. Here is what to check.
SQL SERVER – Finding If Date is Last Day of the Month
Did an employee join on the last day of the month? I show the add one day trick and the EOMONTH function from SQL Server 2012 to check it.
SQL SERVER – Scope of ERROR_MESSAGE
ERROR_MESSAGE() gives the exact error text inside a TRY CATCH block, but it returns nothing outside CATCH. A quick demo of the scope of ERROR_MESSAGE.
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