SQL Server Execution Plans - Red Gate Software

Figure 7.10
Chapter 7: Special Datatypes and Execution Plans
Starting at the beginning of physical operations, top and right, we see a normal execution
plan. A Clustered Index Scan operation against the JobCandidate table followed by
a Filter operation that ensures that the Resume field is not null. A Nested Loops join
combines this data from the filtered JobCandidate table with data returned from the
Employee table, filtering us down to two rows.
Then, another Nested Loops operator is used to combine data from a new operator, a
Table Valued Function. This Table Valued Function, subtitled "XML Reader with XPath
filter" operator represents as relational data the output from the XQuery. The role it
plays is not dissimilar to that of the Remote Scan operation from the OPENXML query.
However, the Table Valued Function, unlike the Remote Scan in the example, is actually
a part of the query engine and is represented by a distinct icon.
The ToolTip for the Table Valued Function shows that four rows were found.
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