What are SQL Server execution plans and how do I read them?
SQL Server execution plans are visual representations of how SQL Server executes a query. They show the steps taken to retrieve data.
Can you explain the different types of execution plans?
There are two main types: estimated execution plans, which predict the query execution without running it, and actual execution plans, which show the real execution details after the query runs.
How can I view the execution plan for a query?
You can view execution plans in SQL Server Management Studio by using the 'Include Actual Execution Plan' option or by running the command 'SET SHOWPLAN_XML ON'.
What should I look for in an execution plan to optimize my query?
Look for high-cost operations, missing indexes, and any table scans that could be replaced with more efficient index seeks.
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