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

Difference between stored procedures and functions ?

Posted By :Bablu Bablu     Posted Date :May 07, 2010    Points :10   Category :Sql Server 
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 allow select as well as DML statement in it whereas function allow 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 can not be utilized in a select statement whereas function can be embedded in a select statement.

You can also find related Interview Question to Difference between stored procedures and functions ?  below: 

differences between stored procedures and functions:

  
Functions
----------
1) can be used with Select statement
2) Not returning output parameter but returns Table variables
3) You can join UDF
4) Cannot be used to change server configuration
5) Cannot be used with XML FOR clause
6) Cannot have transaction within function

Stored Procedure
-----------------
1) have to use EXEC or EXECUTE
2) return output parameter
3) can create table but won't return Table Variables
4) you can not join SP
5) can be used to change server configuration
6) can be used with XML FOR Clause
7) can have transaction within SP (More...)

What are the differences among batches, stored procedures, and triggers?

  

Batch:
------
A batch is a group of one or more SQL statements. SQL Server compiles the statements of a batch into a single executable unit, called an execution plan. The statements in the execution plan are then executed one at a time.

stored procedure :
------------------
A stored procedure is a group of SQL statements that is compiled one time and can then be executed many times.

trigger:
--------
A trigger is a special type of stored procedure that is not called directly. Trigger is fired each time row is affected by Insert, Update or Delete command.


(More...)

How LINQ is beneficial than Stored Procedures?

  
There are couple of advantage of LINQ over stored procedures.

1. Debugging - It is really very hard to debug the Stored procedure but as LINQ is part of .NET, you can use visual studio's debugger to debug the queries.

2. Deployment - With stored procedures, we need to provide an additional script for stored procedures but with LINQ everything gets complied into single DLL hence deployment becomes easy.

3. Type Safety - LINQ is type safe, so queries errors are type checked at compile time. It is really good to encounter an error when compiling rather than runtime exception! (More...)

How LINQ is beneficial than Stored Procedures?

  
There are couple of advantage of LINQ over stored procedures.

1. Debugging - It is really very hard to debug the Stored procedure but as LINQ is part of .NET, you can use visual studio's debugger to debug the queries.

2. Deployment - With stored procedures, we need to provide an additional script for stored procedures but with LINQ everything gets complied into single DLL hence deployment becomes easy.

3. Type Safety - LINQ is type safe, so queries errors are type checked at compile time. It is really good to encounter an error when compiling rather than runtime exception! (More...)

What is the difference between "dynamic SQL" and "stored procedure" ?

  
Dynamic sql is the bunch of statements that dynamically constructed at run time and not stored in database.
Where as Stored procedures are stored in data base in complied form. (More...)

why use stored procedures ?

  
* Execution plan retention and reuse
* Query auto-parameterization
* Encapsulation of business rules and policies
* Application modularization
* Sharing of application logic between applications
* Access to database objects that is both secure and uniform
* Consistent, safe data modification
* Network bandwidth conservation
* Support for automatic execution at system start-up
* Enhanced hardware and software capabilities
* Improved security
* Reduced development cost and increased reliability
* Centralized security, administration, and maintenance for common routines (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...)

How many types of Stored Procedures are there in Sql Server?

  
1. User Defined Stored Procedures.
a. Transact-SQL stored procedure
b. CLR Stored Procedure.

2. System Stored Procedures (More...)

Database: Difference between stored procedure and trigger?

  
.Stored procedure are called explicitly where as trigger are called implicitly.
.Stored procedure are not attached to specific table where as triggers are attached to specific table.
.Stored procedure are called by invoking a CALL to it where this does not applies in case of trigger.


(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...)

What are Beninese of stored procedures?

  
- improve performance of application
- Reduce traffic
- Promote code reuse (More...)

Why use Stored Procedures ?

  
Stored procedures allow a lot more flexibility offering capabilities such as conditional logic
Stored procedures are stored within the DBMS, bandwidth and execution time are reduced
Client developers are abstracted from complex designs
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