- Why do we write stored procedures?
- What is difference between stored procedure and function?
- Which is faster stored procedure or function?
- Why stored procedure is better than query?
- Can you use a stored procedure in a select statement?
- Can we call a procedure inside a function?
- What are the different in triggers?
- What are the advantages and disadvantages of stored procedures?
- When should you use stored procedures?
- How do I create a stored procedure?
- When should I use stored procedures and when should I use views in SQL Server?
- Why do we need triggers?
- What is not an advantage of stored procedures?
- Why are stored procedures faster?
- Why Stored procedures are bad?
- How do you execute a procedure?
- What is a procedure?
- Why use stored procedures instead SSIS?
- Why we use stored procedure in MySQL?
- What are the types of stored procedures?
- What are stored procedures and functions?
Why do we write stored procedures?
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.
Which is faster stored procedure or function?
Stored Procedures can be fast, very fast, as they are pre-compiled. The optimiser does not have to work out the execution plan each time. A Stored Procedure will return results in a table form. Functions can be Scalar (returning a single result) or return Tabular data.
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.
Can you use a stored procedure in a select statement?
Stored procedures are typically executed with an EXEC statement. However, you can execute a stored procedure implicitly from within a SELECT statement, provided that the stored procedure returns a result set.
Can we call a procedure inside a function?
Because it is permitted to call procedure inside the function. … The function might be in scope of the procedure but not vice versa. Your procedure is doing something which is not allowed when we call a function in a query (such as issuing DML) and you are calling your function in a SELECT statement.
What are the different in triggers?
In SQL Server we can create four types of triggers Data Definition Language (DDL) triggers, Data Manipulation Language (DML) triggers, CLR triggers, and Logon triggers.
What are the advantages and disadvantages of stored procedures?
The procedure calls are quick and efficient as stored procedures are compiled once and stored in executable form….Portability –AdvantagesDisadvantagesIt is pre-compiled.Need expert developer, since difficult to write code.It reduces network traffic.It is database dependent.3 more rows•Jun 5, 2020
When should you use stored procedures?
Basically when you have to perform operations involving data that do not need to get out of the database. For example, you want to update one table with data from another, it makes little sense to get the data out and then back in if you can do it all in one single shot to the db.
How do I create a stored procedure?
How to Create a Stored ProcedureIn 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…•
When should I use stored procedures and when should I use views in SQL Server?
Views should be used to store commonly-used JOIN queries and specific columns to build virtual tables of an exact set of data we want to see. Stored procedures hold the more complex logic, such as INSERT, DELETE, and UPDATE statements to automate large SQL workflows.
Why do we need triggers?
Triggers help the database designer ensure certain actions, such as maintaining an audit file, are completed regardless of which program or user makes changes to the data. … The programs are called triggers since an event, such as adding a record to a table, fires their execution.
What is not an advantage of stored procedures?
Solution(By Examveda Team) In SQL Server, for instance, they’re not. Stored procedures and parameterized SQL are both compiled before being run. A stored procedure can sometimes reuse an execution plan if a corresponding one exists…but so can parameterized SQL.
Why are stored procedures faster?
“Stored procedures are precompiled and cached so the performance is much better.” 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. This all costs time.
Why Stored procedures are bad?
Stored procedures promote bad development practices, in particular they require you to violate DRY (Don’t Repeat Yourself), since you have to type out the list of fields in your database table half a dozen times or more at least. This is a massive pain if you need to add a single column to your database table.
How do you execute a procedure?
To execute a stored procedure 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.
What is a procedure?
A procedure is a document that instructs workers on executing one or more activities of a business process. It describes the sequence of steps, and specifies for each step what needs to be done, often including when the procedure should be executed and by whom.
Why use stored procedures instead SSIS?
Second, the graphical interface lets you build large, complex and reliable transforms much more easily than hand-crafted T-SQL. And third, SSIS lets you more easily interact with additional external sources, which can be very handy for things like data cleansing.
Why we use stored procedure in MySQL?
Stored procedures help reduce the network traffic between applications and MySQL Server. Because instead of sending multiple lengthy SQL statements, applications have to send only the name and parameters of stored procedures.
What are the types of stored procedures?
Different Types of stored procedure sql ServerSystem Defined Stored Procedure. These stored procedures are already defined in SQL Server. … Extended Procedure. Extended procedures provide an interface to external programs for various maintenance activities. … User-Defined Stored Procedure. These procedures are created by the user for own actions. … CLR Stored Procedure.
What are stored procedures and functions?
What are the differences between Stored procedures and functions?FunctionsProceduresYou cannot manage transactions inside a function.You can manage transactions inside a function.You cannot call stored procedures from a functionYou can call a function from a stored procedure.4 more rows•Mar 20, 2019