An index .IDX file is created for the associated trace .Operate file quickly when opening the trace file in WinDbg. You could manually build the index file by utilizing the !index command. An index allows for more quickly access to the trace information.
The Cardinality Estimation product for REGEXP_LIKE supplies default selectivity values. Use this hint if the default estimation is simply too lower. It sets the selectivity to a fixed higher selectivity price.
A named pre-described set of provider configurations which allows widespread tracing scenarios to generally be specified succinctly. The next profiles are available:
Warning: Trace Flag 139 is not meant to become enabled repeatedly inside of a creation surroundings, and should be employed for the only real objective of undertaking databases validation checks described in SQL Server and Azure SQL Database enhancements in dealing with some facts sorts and uncommon operations. It should be quickly disabled just after validation checks are completed.
The subsequent example shows an alternative method to preserving the semantics of the query and allowing the optimizer to choose an index other than the index specified in the table trace.
Specifies the indexed views are expanded. Also specifies the Question Optimizer will not contemplate any indexed view for a substitute for virtually any query part. A watch is expanded when the perspective definition replaces the check out identify while in the question text.
Commonly, a concatenation-based algorithm can Enhance the overall performance of queries that require distinctive or tiny inputs.
Instructs the Query Optimizer to utilize a specific price for a neighborhood variable if the question is compiled and optimized. The worth is made use of only during query optimization, and not throughout query execution.
Share the compressed file with Microsoft help by using the File add possibility as part of your assist request.
The next illustration uses the FORCESEEK table hint. The Desk Trace clause must also specify a similar two-component title as being the uncovered item identify. Specify the name when you use the INDEX read more here hint on a table that makes use of a two-portion identify. The instance uses the AdventureWorks2022 database.
Whenever you flush the buffers of the trace session, the occasions from the buffers are delivered to the trace log or trace client promptly.
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Including a trace listener into the Listeners collection might cause an exception being thrown while tracing, if a resource utilized by the trace listener will not be accessible.
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