kill any active connections for the database that we want to restore by putting database in single user mode.How do I refresh a database in SQL Server? Then click the Refresh Data Source View button in the designer or choose Refresh from the Data Source View menu. To refresh a DSV, double-click the DSV from Solution Explorer in SQL Server Data Tools. Rewrite some or all of the stored data to match the new definition.Check all the existing data for compatibility, then change metadata.New Metadata-Only Column Changes in SQL Server 2016 The hints override any execution plan the query optimizer might select for a query. Hints are options or strategies specified for enforcement by the SQL Server query processor on SELECT, INSERT, UPDATE, or DELETE statements. This command allows you to clear the plan cache, a specific plan or a SQL Server resource pool. Only one OPTION clause can be specified in a statement. This clause can be specified in different statements like SELECT, UPDATE, MERGE and DELETE. The OPTION clause is used to query the table with different query hint. When the procedure is compiled or recompiled, the value passed into the parameter is evaluated and used to create an execution plan. SQL Server uses a process called parameter sniffing when it executes stored procedures that have – you guessed it – parameters. The next time you run make, the changes in the header files do not cause any recompilation. Use the command `make -t’ to mark all the object files as up to date. Use the command `make’ to recompile the source files that really need recompilation. Use CREATE OR REPLACE to recompile the procedure.Drop the procedure and create it again.Use the ALTER PROCEDURE or ALTER PACKAGE command to recompile the procedure or the entire package.…Ĭompile one or more procedures, using one of these methods: Convert scalar functions into table-valued functions.Use automatic partitioning SQL server features.
How can I make SQL run faster?īelow are 23 rules to make your SQL faster and more efficient To refresh a view, you can use either sp_refreshsqlmodule or sp_refreshview with the same results. Otherwise, the module might produce unexpected results when it is queried or invoked. Sp_refreshsqlmodule should be run when changes are made to the objects underlying the module that affect its definition. : to compile again Last year’s revival of composer Joseph Rumshinsky’s Yiddish classic was made possible by the work of musicologist Michael Ochs, who labored for the better part of a decade recompiling the lost work after it slid into obscurity.- What is Sp_refreshsqlmodule? where as stored procedure is compiled when it is submitted for the first time & this compiled content is stored in something called procedure cache,for subsequent calls no compilation,just execution & hence better performance than query. Why stored procedure is better than query?Įvery query is submited it will be compiled & then executed.
This does not execute the procedure but it does mark the procedure to be recompiled so that its query plan is updated the next time that the procedure is executed. Select New Query, then copy and paste the following example into the query window and click Execute. To recompile a stored procedure by using sp_recompile … SQL Server automatically recompiles stored procedures, triggers, and user-defined functions when it is advantageous to do this. The queries used by stored procedures, or triggers, and user-defined functions are optimized only when they are compiled. Sp_recompile looks for an object in the current database only. When the same query is executed again, there will be no existing plan in cache, so the query will have to be recompiled. RECOMPILE – specifies that after the query is executed, its query execution plan stored in cache is removed from cache.
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