Without additional optimizations, SQL Server's Merge Join algorithm is the fastest physical join operator available. In this episode we dive into the internals to understand how the merge join algorithm works, as well as what it means for our query performance.
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Related blog post about Merge Joins:
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Be sure to check out part 1 on nested loops joins: [ Ссылка ]
And part 3 on hash match joins: [ Ссылка ]
The pessimistic costing of merge joins:
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Going further in-depth with merge joins:
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