- What is a procedure?
- What is the purpose of stored procedure?
- What is difference between stored procedure and function?
- What is a stored procedure and how is it used?
- Which is better stored procedure or query?
- Why do we need stored procedure?
- Why do we need triggers?
- Why stored procedure is better than query?
- What are the types of triggers?
- Why are stored procedures bad?
- What is stored procedure example?
- How do you execute a procedure?
- How are stored procedures called?
- What is a stored procedure and why is it particularly useful?
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..
What is the purpose of 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 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.
What is a stored procedure and how is it used?
A stored procedure is used to retrieve data, modify data, and delete data in database table. You don’t need to write a whole SQL command each time you want to insert, update or delete data in an SQL database. A stored procedure is a precompiled set of one or more SQL statements which perform some specific task.
Which is better stored procedure or query?
Code reusability and better maintainability It is easier to troubleshoot a stored procedure than inline query as we can isolate it. There is also a way to write unit test in SQL server which help to confirm the logic of stored procedure. Performance tuning is possible to do on stored procedure level.
Why do we need stored procedure?
Stored procedures provide improved performance because fewer calls need to be sent to the database. For example, if a stored procedure has four SQL statements in the code, then there only needs to be a single call to the database instead of four calls for each individual SQL statement.
Why do we need triggers?
Trigger: A trigger is a stored procedure in database which automatically invokes whenever a special event in the database occurs. For example, a trigger can be invoked when a row is inserted into a specified table or when certain table columns are being updated.
Why stored procedure is better than query?
Reusability of Cached Query Plans 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 are the types of triggers?
There are two types of triggers.BEFORE trigger: – This trigger is called before the execution of the DML statement. … After Trigger: – this trigger is called after once DML statement is executed. … Combination of triggers: – We can have combination of row, statement, BEFORE and AFTER triggers.
Why are stored procedures bad?
Stored procedures require you to reinvent wheels. … Very often, you will end up reinventing these wheels using copy and paste code, which again is a bad practice. Stored procedures are difficult to unit test. With an ORM, you can mock your database code so as to be able to test your business logic quickly.
What is stored procedure example?
A stored procedure in SQL is a type of code in SQL that can be stored for later use and can be used many times. So, whenever you need to execute the query, instead of calling it you can just call the stored procedure. Values can be passed through stored procedures.
How do you execute a procedure?
Expand the database that you want, expand Programmability, and then expand Stored Procedures. Right-click the user-defined stored procedure that you want and click Execute Stored Procedure. In the Execute Procedure dialog box, specify a value for each parameter and whether it should pass a null value.
How are stored procedures called?
A stored procedure is a group of one or more database statements stored in the database’s data dictionary and called from either a remote program, another stored procedure, or the command line. Stored procedure are commonly called SPROCS, or SP’s.
What is a stored procedure and why is it particularly useful?
By grouping SQL statements, a stored procedure allows them to be executed with a single call. This minimizes the use of slow networks, reduces network traffic, and improves round-trip response time. OLTP applications, in particular, benefit because result set processing eliminates network bottlenecks.