Quick Answer: What Is A Stored Procedure In SQL With Example?

What is a procedure?

1a : a particular way of accomplishing something or of acting.

b : a step in a procedure.

2a : a series of steps followed in a regular definite order legal procedure a surgical procedure.

b : a set of instructions for a computer that has a name by which it can be called into action..

Why we use stored procedure?

What is a Stored Procedure? A stored procedure is a prepared SQL code that you can save, so the code can be reused over and over again. So if you have an SQL query that you write over and over again, save it as a stored procedure, and then just call it to execute it.

What is difference between function and procedure?

A function is used to calculate result using given inputs. A procedure is used to perform certain task in order. A function can be called by a procedure. A procedure cannot be called by a function.

Which is faster stored procedure or function?

There is no difference in speed between a query run inside a function and one run inside a procedure. Stored procedures have problems aggregating results, they cannot be composed with other stored procedures.

How do stored procedures work?

Stored procedures differ from ordinary SQL statements and from batches of SQL statements in that they are precompiled. … Subsequently, the procedure is executed according to the stored plan. Since most of the query processing work has already been performed, stored procedures execute almost instantly.

What is difference between stored procedure and function?

The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.

How do you run a procedure?

When a procedure is called by an application or user, the Transact-SQL EXECUTE or EXEC keyword is explicitly stated in the call. Alternatively, the procedure can be called and executed without the keyword if the procedure is the first statement in the Transact-SQL batch.

Which is better view or stored procedure?

In short, based on my experience in some complex queries, Stored procedure gives better performance than function. But you cannot use results of stored procedure in select or join queries. … Everything you can do in a view you can do in a stored procedure. But in a stored procedure, you can do with much more flexibility.

How do I view a procedure in SQL Developer?

You can use the connections tab which is in the left side of sql developer. Browse to the connection name in the connections tab, expand the required object and just click, it will open the code in new tab.

How do I create a stored procedure in SQL?

Using SQL Server Management StudioIn Object Explorer, connect to an instance of Database Engine and then expand that instance.Expand Databases, expand the AdventureWorks2012 database, and then expand Programmability.Right-click Stored Procedures, and then click New Stored Procedure.More items…•

How do I view a stored procedure in SQL?

Using SQL Server Management Studio Expand Databases, expand the database in which the procedure belongs, and then expand Programmability. Expand Stored Procedures, right-click the procedure and then click Script Stored Procedure as, and then click one of the following: Create To, Alter To, or Drop and Create To.

Why stored procedure is better than query?

The primary advantage to parameterized queries and stored procedures is that they don’t have to go through the compile process over and over again. Stored procedures also offer some additional security aspects. Ad hoc queries are just query strings passed to the server directly. They are compiled and stored in memory.

What is MySQL stored procedure?

A procedure (often called a stored procedure) is a subroutine like a subprogram in a regular computing language, stored in database. A procedure has a name, a parameter list, and SQL statement(s). All most all relational database system supports stored procedure, MySQL 5 introduce stored procedure.

Where are stored procedures stored?

The stored procedure are stored as named objects in the SQL Server Database Server. When you call a stored procedure for the first time, SQL Server creates an execution plan and stores it in the cache.