Answer
An execution plan shows how SQL Server executes a query—joins, indexes, scans, seeks. It is vital for tuning slow queries.
Quick Answer
An execution plan is SQL Server's roadmap for running a query — which indexes to use, how to join tables, in what order to process operations. Reading the plan reveals bottlenecks like table scans, key lookups, or hash matches that slow things down. It's the first tool to reach for when tuning.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ