One of the questions that I get over and over again is about where SQL Server stores the data that is returned by the various Dynamic Management Views (DMVs) and Dynamic Management Functions (DMFs). Many people think that this type of data is stored somewhere within a system database like the master database. But this …
“Hot town, summer in the city. Back of my neck getting dirty and gritty. Been down, isn’t it a pity. Doesn’t seem to be a shadow in the city. All around, people looking half dead…” It’s hot, very hot here in Vienna! For me it’s always time to cool down (from work!), relax, and work …
Today I have uploaded SQL Server Quickie #37 to YouTube. This time I’m talking about Inner Joins in SQL Server. Thanks for your time, -Klaus
When I talk about indexes, people always ask me if the sorting order of the columns in a composite Non-Clustered Index matters? The short answer is always “It depends”. Let’s have a look on it why “it depends”.. Singleton Lookups When you have queries which perform Singleton Lookups on your tables, the sorting order of …
Composite Non-Clustered Indexes – does the Column Order matter? + read more
Every index in SQL Server can improve your query performance, if the Query Optimizer chooses the index in the execution plan for data retrieval. But on the other hand every index will also hurt your performance, because the index has to be maintained during INSERT, UPDATE, and DELETE operations. Therefore it is very important to …
999 Non-Clustered Indexes on a Table – a good idea? + read more
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