If you have an application that is making changes to your database and you want to save those changes to disk, save them to a table. That way you won’t have to start the application over and overwrite your changes. Or you can use a variable in your stored procedure to save the changes you want to see.
If you’ve ever run into a database that you wanted to run on a different machine you can do that by making sure your app has the appropriate permissions in order to use stored procedures. If your stored procedure also has the execute permission, you can be assured that your database will use the same database. But if your stored procedure does not you need to make sure to give permissions to your app.
The difference between variables vs procedure parameters is that if you use a procedure as a parameter in a stored procedure the value of the procedure is lost when you run the stored procedure. The only place variables are stored in a database is the way the database handles the data when you call it. With variables, you can change the value of a variable at any time but you can’t change the value of the stored procedure.
So basically, you can’t run stored procedures from a database. It will just end up with the same value every time.
A stored procedure can have only one or no parameters. This is called a view and it doesn’t matter which one you call with so long as you always call it. In order for a procedure to be a view, it would have to have a name, which is very rare. The only exceptions are data-modifying procedures such as UPDATE or INSERT and stored procedures which have no parameters but can call any other procedure within itself.
There are two types of stored procedures: stored procedures are used to create and update tables while views are used to create and execute queries. Stored procedures are very common in programming languages as they allow you to create an atomic transaction by breaking up a whole database into smaller, more manageable pieces called transactions. Views are more database specific and have to be created with a specific database. Stored procedures can be used to create and update tables in many different databases and even on different types of databases.
In the case of the example above, it would be hard to say whether the stored procedure is the cause of the problem or if it’s the result of execution by the view. Stored procedures have much more overhead than views, so if this particular view is slow, it’s likely a stored procedure. In our company we have a large amount of stored procedures that are written by our developers to handle very specific database queries. We only have a handful of views to match their number of queries.
It’s a little hard to say whether its the stored procedure that is causing the slow query. It’s possible that the slow query is a result of the stored procedure being written by the developer. In that case, it might be worth optimizing the stored procedure, since these procedures are often quite large. In fact, it is worth optimizing our stored procedures to avoid writing them on a daily basis.
The SQL Server Performance Tuning forum has a thread on what to do if you have a stored procedure that is causing you a lot of queries to execute slowly. In it, a member says that an option like “exec sp_executesql N’EXEC dbo.SpExecutesql;…” can help alleviate the problem.
This is a good point, although I don’t have the code to run it. In general, I would recommend that you test your stored procedures to see if they are causing slowdowns. If they are, then it would be worth optimizing those procedures.
