Run the following script from the Test database (we will be running this script again later during this exercise).
Contributors, in this article, applies TO: SQL Server (starting with 2008 azure SQL Database.
A new plan is needed as these SET options can impact the choice of an execution plan because they affect the results of evaluating constant offline activation keygen avatar the game expressions during the optimization process (a process known as constant folding and explained here ).
These can be either Unicode or double-byte character sets (dbcs) converted to Unicode.To illustrate how this value changes we are going to run SET nocount ON which should turn on bit value 512. .Dbcc freeproccache, run the.NET application from a command prompt window and provide the value 870 as a parameter (note that this application is only running the test stored procedure).32, aNSI_nulls, controls null handling when using equality operators.No, the SET option only affects the context of your connection, if 2 connections come in and one has ansi_padding OFF and the other one ON they don't affect the other connection.So, if the stored procedure is executed thousands of times, only one optimization is needed.If thats what you want to do, check out How to Set the Current Language in SQL Server (T-SQL).Another connection setting, forceplan, acts in a similar way to a hint, requesting the Query Optimizer both to preserve the join order as specified on the query syntax and to use nested loop joins only.I have another one here but usually you should not be doing this.Implicit_transactions, for dblib network library connections, controls whether a transaction is started implicitly when a statement is executed.Controls padding of fixed-length variables.Take a look at what all of these set options do and how they can affect your session Last Updated: About the author Greg Robidoux is the President of Edgewood Solutions and a co-founder.Now run the application again using a parameter that returns only a few records and will benefit from an index seek/RID lookup plan: C:TestApptest Enter ProductID: 898 If you inspect the plan cache again you will notice that the plan has been used twice and.
Even for the same parameters.
Read more here px, so if connection 1 comes in with set ansi_nulls off then select * from bla where col null will work this however won't work for connection 2 if it comes with with the default ansi_nulls setting (ON) you can see what.