Yes, NOLOCK can miss rows. A row can vanish from your report while it sits safely in the table. Nobody deleted it. The read simply walked past it.
UPDATE Without WHERE Clause: The Day Everyone Got a Raise
An UPDATE without WHERE clause changed 8,432 salaries. When ROLLBACK can help, and how to check the affected row count before COMMIT.
SQL SERVER – Setting Deadlock Priority to Control the Transaction that is Rolled Back
In this article, we will explore Setting Deadlock Priority to Control the Rolled Back Transaction. Let us explore more in this blog post.
Transactions and Variables – SQL in Sixty Seconds #150
Transactions and Variables both are not related at all. There is no impact of a transaction on a variable. Let us learn about it today.
SQL SERVER – CREATE Statement in TRANSACTION
Recently my client of Comprehensive Database Performance Health Check asked me if we can use the CREATE statement in the TRANSACTION or not.
Nested Transactions are Myth – SQL in Sixty Seconds #125
Many sent me an email that they want to know more about the nested transactions. Let us learn about them in today’s blog post.
SQL SERVER – Finding Open Transactions for Session – @@TRANCOUNT
Finding open transactions for session is easy with SELECT @@TRANCOUNT. A client asked me during a health check, so here is a quick demo.