May 2019
Intermediate to advanced
484 pages
11h 23m
English
Content preview from Learn T-SQL Querying
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Clustered Index Seek
A Clustered Index Seek operator represents a seek operation against a clustered index. This is essentially the same as a NonClustered Index Seek operator, except that the leaf level contains data pages, so the entire row can be output in addition to the index columns.
The following example shows a query executed in the AdventureWorks sample database with a Clustered Index Seek operator:
SELECT LastName, FirstNameFROM Person.PersonWHERE BusinessEntityID = 5;
The query generates the following execution plan:
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