Recompile reviews4/19/2023 ![]() ![]() When SQL Server executes procedures, any parameter values that are used by the procedure when it compiles are included as part of generating the query plan. It also occurs if an underlying table referenced by the procedure has undergone physical design changes.Īnother reason to force a procedure to recompile is to counteract the "parameter sniffing" behavior of procedure compilation. Automatic recompiling occurs whenever SQL Server is restarted. There are times when procedure recompilation must be forced and other times when it occurs automatically. This can improve the procedure's processing performance. If a database undergoes significant changes to its data or structure, recompiling a procedure updates and optimizes the procedure's query plan for those changes. When a procedure is compiled for the first time or recompiled, the procedure's query plan is optimized for the current state of the database and its objects. ![]() There are three ways to do this: WITH RECOMPILE option in the procedure definition or when the procedure is called, the RECOMPILE query hint on individual statements, or by using the sp_recompile system stored procedure. This article describes how to recompile a stored procedure in SQL Server by using Transact-SQL. The less you have chance to make manual tweaks to system on live the better is your dev life.Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Analytics Platform System (PDW) Say it’s not possible anymore or whatever. It’s okay to runtime compilation at dev environments but for live turn it off. And what’s better – it’s also easy to control. Wrapping upĬurrent way of handling view compilation in ASP.NET Core is perhaps the best one there has ever been. It’s possible to make it also configurable although I don’t recommend to play with temptation to make manual changes to views in live possible again. public void ConfigureServices( IServiceCollection services) This is how I turn on runtime compilation only for debug builds. When release is made then things must not change due to manual changes. Conditional runtime compilationīut I also don’t want to compile views on live machines. I don’t want to stop application and then run it again. I run application in Visual Studio and I want to see changes in views immediately. I want views to compile automatically when I build application. This is done in ConfigureServices() method of Startup class. To use runtime compilation you have to tell your application you want to use it. It’s still possible to make ASP.NET Core application to compile views when changes are made.įirst add the following NuGet package to your application: On the screenshot above in red rectangle there’s library of compiled views and its PDB-file. It comes down to best practices (don’t debug on live) and performance. Views are compiled by default to separate library and with ASP.NET Core 3.0 views are not build again when somebody makes changes to views. You can find out more about old era from my blog post ASP.NET MVC: Precompiling views. It didn’t produce anything else but errors and warnings that will pop out when view is built by runtime. There were those who believed that building of views make things optimal and faster but it was just an compiler option to make it go through views and make validational build. Precompiled views were also supported by previous versions of ASP.NET MVC although it was a bit tricky to make things work and there was a lot of confusion among developers because they often didn’t understood difference between building and precompiling views. Click To Tweet Precompiled views back in time Turn on runtime compilation to make ASP.NET Core automatically recompile modified views. Most popular case is when application is running on Visual Studio and we are working on cosmetics of view. ![]() It’s still possible to make ASP.NET Core application build views when changes are made. Views are built when application compiles and this is expected final state for views. ASP.NET Core 3.0 applications doesn’t build views automatically by default when changes are made. ![]()
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