June 2015
Intermediate to advanced
1800 pages
70h 6m
English
book
Microsoft SQL Server 2014 Unleashed
by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft SQL Server 2014 Unleashed
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Using the USE PLAN Query Hint
The USE PLAN query hint in SQL Server 2014 can be used to encourage the Query Optimizer to use the specified XML query plan for processing the query. This option provides more control over influencing the execution of a query than is possible with the other available query hints, such as FORCE ORDER, LOOP JOIN, and KEEP PLAN. None of these options individually are powerful enough to influence the Query Optimizer to consistently choose a particular query plan, especially when the referenced table row counts, statistics, indexes, and other attributes of the environment change.
The USE PLAN query hint is specified in the OPTION clause, and you provide it with a query plan in XML format. Listing 35.2 provides an example ...
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