Questions

Should stored procedures contain business logic?

“The default stance in designing an application should be that business logic is held in the application code, NOT in database stored procedures. Only move business logic into StoredProcedures as performance needs required. “

How do stored procedures improve performance?

Stored procedures improve database performance as they allow cached query plans to be reused. In the case of dynamic SQL, you will have to use parameterized queries to increase cached query plan reusability.

What is stored procedure performance?

The main performance advantage of a stored procedure is that they have the ability to reuse compiled and cached query plans. In the first execution of a stored procedure, its execution plan is stored in the query plan cache and this query plan is used in the next execution of the procedure.

How do you test a stored procedure performance?

How to test performance of stored procedure in SQL Server

  1. Using SQL Server Profiler.
  2. Display Estimated Execution Plan.
  3. Using SQL Server Profiler.
  4. Using Transact-SQL.
  5. Verify while creating a stored procedure.
  6. Verify the execution of a stored procedure.

What is the use of business logic?

Business logic determines how data may be shown, stored, created, and altered. It provides a system of rules that guides how business objects (parts of software that control how data is transported) work with one another. Business logic also guides how business objects within software are accessed and updated.

Do stored procedures run faster?

Because of this, it’s probably more likely that your stored procedure plans are being ran from cached plans while your individually submitted query texts may not be utilizing the cache. Because of this, the stored procedure may in fact be executing faster because it was able to reuse a cached plan.

What are the advantages of stored procedure?

Advantages of Stored Procedures

  • To help you build powerful database applications, stored procedures provide several advantages including better performance, higher productivity, ease of use, and increased scalability.
  • Additionally, stored procedures enable you to take advantage of the computing resources of the server.

How do I analyze a stored procedure performance in SQL Server?

  1. Specify column names instead of using * in SELECT statement. Try to avoid *
  2. Avoid temp temporary table. Temporary tables usually increase a query’s complexity.
  3. Create Proper Index. Proper indexing will improve the speed of the operations in the database.
  4. Use Join query instead of sub-query and co-related subquery.

Why stored procedures are faster?

Stored procedures are precompiled and optimised, which means that the query engine can execute them more rapidly. By contrast, queries in code must be parsed, compiled, and optimised at runtime.

How do you test DB performance?

You should follow these steps:

  1. Define performance goals, regarding load and response time. You should identify the accepted response times for specific data load.
  2. Define resources. Not every machine configuration will behave the same.
  3. Execute load testing. You could do it by using tools like SQL Server load generator.

When else should you have business logic in your stored procedures?

When else should you have business logic in your stored procedures? 1 Use an IDE and refactor. 2 Use source control. 3 Write unit tests (tSQLt). 4 Live the dream. Business logic is often complex and better modelled in a language that handles that better – T-SQL is… More

Are stored procedures good or bad?

Furthermore, the claim that stored procedures are cached on the server, whereas ad-hoc SQL is not, is a myth that was busted by Frans Bouma in his blog post, Stored Procedures are bad. Below I present some key points questioning stored procedures I also experienced myself: They may often require you to reinvent wheels.

Do you prefer business logic in programming space or SQL space?

I think that business logic in programming space makes more sense when Power of Expression is important in your team/project. I belief that SQL space is not as expressive, but it can do the job. Use the best tools you have on hand for the most appropriate tasks. Fiddling with logic and higher order concepts is best done at the highest level.