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SQL SERVER RECOMPILE HOW TO
SQL SERVER RECOMPILE UPDATE

Make sure that the command text has the name of the Stored Procedure, instead of the text of a query. Using (SqlCommand cmd = new SqlCommand(sql, connection))Ĭmd.CommandType = CommandType.StoredProcedure Ĭmd.Parameters. A new query window opens where you can define your new Stored Procedure.Ī Stored Procedure to execute the query you saw in the previous section would look like this: Right click Stored Procedures and choose New Stored Procedure. To create a Stored Procedure in SQL Server Management Studio, expand your database, expand Programmability, and then expand Stored Procedures. They need through Stored Procedures, while preventing them from taking unplanned actions. That way, you can allow users to access the information You can implement better security by only allowing access to the database via Stored Procedures.Or more Stored Procedures, without touching the web site.

SQL SERVER RECOMPILE UPDATE

When a table definition changes, you may only need to update one Stored Procedures make it easier to isolate database details from your web site code.

This allows you to simply send the Stored Procedure nameĪnd parameters to the database server, instead of sending individual queries - saving networking overhead.

Stored Procedures can contain a series of queries and T-SQL control statements such as IF THEN.

Just as with sp_executesql, Stored Procedures allow you to explicitly define parameters to make it easier for SQL Server to reuse execution plans.

Instead of sending individual queries to the database, you can package them in a Stored Procedure that is permanently stored in the database. WHERE ' that sp_executesql expects nvarchar values for its first two parameters, so you need to prefix the strings with N. JOIN dbo.Author a ON b.LeadAuthorId=a.Authorid In that case, SQL Server does not store the plan, making execution plan reuse not an issue. Trivial execution plansįor some queries, it is trivial for the query optimizer to pick the most optimal execution plan. You can boost execution plan reuse in your site by making it easier for SQL Server to work out which bits of a query's execution planĬan be reused by a similar query. In part 2, you saw that before a query is executed, the SQL Server query optimizer compiles a cost effective execution plan, If you like this article, please vote for it.

Part 8 Fixing memory, disk, and CPU issues.

Part 1 Pinpointing missing indexes and expensive queries.

In this part 6, we'll look at improving this.

SQL SERVER RECOMPILE HOW TO

In part 2, we saw how to identify suboptimal reuse of execution plans. Of my book ASP.NET Site Performance Secrets,Īvailable at and other book sites. This series is based on chapter 8 "Speeding up Database Access" This is part 6 of an 8 part series of articles about speeding up access to a SQL Server database.