![]() For more information, see Recompile a Stored Procedure. ![]() Also use OPTIMIZE FOR when you create plan guides. ![]() OPTIMIZE FOR can counteract the optimizer's default parameter detection behavior. The data type of must be implicitly convertible to the data type that references in the query. MySQL also has many order dependent issues to be aware of when improving queries. Two - Order Counts The order of operations is something every beginning coder learns as it is important to understand how the computer evaluates operations. can be of any SQL Server system data type that can be expressed as a literal constant. Optimizer hints work on a per query or per statement basis so you will not impact another query’s performance. is used only during query optimization, and not as the value of during query execution. This limits the query to not be executed for more than the specified time limit N(in milliseconds). Specifies that the Query Optimizer uses statistical data instead of the initial value to determine the value for a local variable during query optimization.Ī literal constant value to be assigned for use with the OPTIMIZE FOR query hint. MySQL provides an optimizer hint named MAXEXECUTIONTIME. The value is used only during query optimization, and not during query name of a local variable used in a query, to which a value may be assigned for use with the OPTIMIZE FOR query hint. Instructs the Query Optimizer to use a particular value for a local variable when the query is compiled and optimized. Transact-SQL syntax conventions Syntax ::= Because the SQL Server Query Optimizer typically selects the best execution plan for a query, we recommend only using hints as a last resort for experienced developers and database administrators.
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