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Home >> Interview Question >> Sql Server >> Post New Question Subscribe to Interview Questions

whats the difference between a stroed procedure and a user defined function

Posted By :jay     Posted Date :February 21, 2010    Points :10   Category :Sql Server 
udf ll return only one output parameter where as sp returns more(2100 not sure)

udf are called directly by their name in a pgm where as exec spname
is used to execcute an sp

You can also find related Interview Question to whats the difference between a stroed procedure and a user defined function  below: 

What is a Scalar User-Defined Function?

  
A Scalar user-defined function returns one of the scalar data types. Text, ntext, image and timestamp data types are not supported. These are the type of user-defined functions that most developers are used to in other programming languages. You pass in 0 to many parameters and you get a return value. (More...)

What is Inline Table-Value User-Defined Function?

  
An Inline Table-Value user-defined function returns a table data type and is an exceptional alternative to a view as the user-defined function can pass parameters into a T-SQL select command and in essence provide us with a parameterized, non-updateable view of the underlying tables. (More...)

What is a Multi-statement Table-Value User-Defined Function?

  
A Multi-Statement Table-Value user-defined function returns a table and is also an exceptional alternative to a view as the function can support multiple T-SQL statements to build the final result where the view is limited to a single SELECT statement (More...)

Difference between Function and Stored Procedure?

  
UDF can be used in the SQL statements anywhere in the WHERE/HAVING/SELECT section where as Stored procedures cannot be.
UDFs that return tables can be treated as another rowset. This can be used in JOINs with other tables.
Inline UDF's can be though of as views that take parameters and can be used in JOINs and other Rowset operations.
(More...)

What is Difference between Function and Stored Procedure?

  
UDF can be used in the SQL statements anywhere in the WHERE/HAVING/SELECT section where as Stored procedures cannot be. UDFs that return tables can be treated as another rowset. This can be used in JOINs with other tables. Inline UDF's can be thought of as views that take parameters and can be used in JOINs and other Rowset operations. (More...)

What is Scalar User-Defined Function?

  
A Scalar user-defined function returns one of the scalar data types. Text, ntext, image and timestamp data types are not supported. These are the type of user-defined functions that most developers are used to in other programming languages. You pass in 0 to many parameters and you get a return value. (More...)

What is Inline Table-Value User-Defined Function?

  
An Inline Table-Value user-defined function returns a table data type and is an exceptional alternative to a view as the user-defined function can pass parameters into a T-SQL select command and in essence provide us with a parameterized, non-updateable view of the underlying tables. (More...)

What is Multi-statement Table-Value User-Defined Function?

  
A Multi-Statement Table-Value user-defined function returns a table and is also an exceptional
alternative to a view as the function can support multiple T-SQL statements to build the final result where the view is limited to a single SELECT statement. Also, the ability to pass parameters into a TSQL select command or a group of them gives us the capability to in essence create a parameterized, non-updateable view of the data in the underlying tables. Within the create function command you must define the table structure that is being returned. After creating this type of user-defined function, It can be used in the FROM clause of a T-SQL command unlike the behavior found when using a stored procedure which can also return record sets. (More...)

Difference between Store Procedure and function?

  
S.No Store Procedure Function
1. Return Null or Value Return Value
2. Input,OutPut Parameter Input Parameter
3. Call independently Call SQL Statement
4. Not called from Function Called from Procedure (More...)

Database: Difference between Function and stored procedure?

  

Function can be used in sql statements anywhere in where/select/having etc. where as stored procedure cannot be.
(More...)

Difference between stored procedure and function

  

1.Function must return a value but Stored Procedure can return 0(Zero) or n values
2.Functions have only input parameters but Procedures can have either input or output or both parameters .
3.Function must have one input parameter which is mandatory but 4.Stored Procedure may take 0 (Zero) to n input parameters.
5.Functions can be called from Procedure whereas Procedures cannot be called from Function.
6.Procedure contains DML statement whereas function allows only select statement.
6.Exception handling can be done in stored Procedure only (More...)

What is the difference between stored procedure and function.

  
Below is main differences between two.
1) Procedure can return zero or n values whereas function can return one value which is mandatory.
2) Procedures can have input, output parameters for it whereas functions can have only input parameters.
3) Procedure allows select as well as DML statement in it whereas function allows only select statement in it.
4) Functions can be called from procedure whereas procedures cannot be called from function.
5) Exception can be handled by try-catch block in a procedure whereas try-catch block cannot be used in a function.
6) We can go for transaction management in procedure whereas we can't go in function.
7) Procedures cannot be utilized in a select statement whereas function can be embedded in a select statement. (More...)

What are the requirements to create a CLR based user-defined type?

  
CLR must be enabled for the instance and A class created with a CLR-compatible language. (More...)

Difference between a sub and a function.

  
A Sub Procedure is a method will not return a value
-A sub procedure will be defined with a "Sub" keyword
Sub ShowName(ByVal myName As String)
Console.WriteLine("My name is: " & myName)
End Sub
-A function is a method that will return value(s).
-A function will be defined with a "Function" keyword
Function FindSum(ByVal num1 As Integer, ByVal num2 As Integer) As Integer
Dim sum As Integer = num1 + num2
Return sum
End Function (More...)

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