Question: Why Query Store Actual Operation Mode is Not Same as Requested? Query Regression (poor performing queries, once working great)
Session Wait Stats: Find the Query Behind a Wait Type
Session wait stats tell you which session produced a wait type, and the input buffer tells you which query that session ran. This post shows how to see who waits right now, how to read the wait history of each session, and how to join them to the query text. It also explains the THREADPOOL wait.
SQL SERVER – Upgrade Rule Failure Error: No Custom Security Extensions
Let us learn about upgrade the rule failure error in this blog post and learn how we can fix the error. Locate RSReportServer.config
Parallel Plans: Reading Gather Streams and Repartition Streams
Read Gather Streams and other parallel exchanges, inspect rows per thread and spill evidence, and relate exchange waits to actual work.
SQL SERVER – Upgrade Error: The Specified Service Does Not Exist as an Installed Service
An upgrade from SQL Server 2008 R2 to 2014 failed after the product key step with: the specified service does not exist. Here is the fix.
SQL SERVER – Log Shipping Error: Only Members of the Sysadmin Fixed Server Role Can Perform This Operation
They have observed that Log Shipping Copy and Log Shipping Restore jobs have been failing with log shipping error. Let us fix them.
Retrieve TOP 10 Rows Without Using TOP or LIMIT? – Interview Question of the Week #247
Question: Retrieve TOP 10 Rows Without Using TOP or LIMIT? We do not want to use TOP or LIMIT as they are actually not an ANSI implementation.