Tag Archives: sql server

Covering Index Performance Impact in SQL Server

Covering Index Performance Impact in SQL Server This post can help you to understand the “Covering Index Performance Impact in SQL Server”. First we’ll understand the covering index basics and we’ll see the performance impact using T-SQL code. Q. What … Continue reading

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Parameter Sniffing Performance Impact in SQL Server

Parameter Sniffing Performance Impact in SQL Server This post can help you in understanding the “Parameter Sniffing Performance Impact in SQL Server”. Parameter sniffing is one of the major factors that impact the performance in SQL Server. Every SQL DBA … Continue reading

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How SQL Server Optimizer Calculates the Estimated Row Count

How SQL Server Optimizer Calculates the Estimated Row Count This post can help you out in understanding “How SQL Server Optimizer Calculates the Estimated Row Count”. Once query is submitted, query optimizer takes the help from Histogram (Cardinality Estimates) statistics … Continue reading

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