Stored
Procedures
|
Functions
|
Stored procedure is a set of pre-Compiled sql statements,
which will get executed for 1 st time and stored plan in the Execution plan.
|
Function is a reusable piece of code, which is used
to execute same set of statements. And will return a value.
|
Stored procedure will support exception handling
such we can use try
catch blocks.
|
Functions
will not support exception handling we can not use try catch blocks.
|
We can call a function in Stored procedures.
|
We cannot call store procedures in functions.
|
Stored procedures can contain zero or N
parameters.
|
Functions must contain at least one parameter.
|
Stored procedure always returns INTEGER as data
type.
|
Function will return any data Type .
|
We can execute stored procedures’ by using EXEC
command
|
We can execute Functions by using SELECT command
|
Sp’s will accept both input parameters and out put
parameters. We can have up to 21,000 input parameters.
|
Functions will accept only in put parameters and but
not output parameters. We can have up to 1,023 input parameters
|
We can perform will DML operations like
INSERT,UPDATE,DELETE with sp’s
|
We cannot perform DML operations.
|
We can call one sp’s in another stored procedure.
|
We can call one function another function.
|
Stored Procedure
may or not return values.
|
Function must return a value.
|
Can use
transactions within Stored Procedures.
|
Transactions are not allowed within
functions.
|
Can use both table
variables as well as temporary table in it.
|
We can use only table variables, it will not
allow using temporary tables.
|
Procedures can’t be
used in Join clause
|
A UDF can be used in join clause as a result
set.
|
Dynamic sql will support in stored procedures
|
Dynamic sql will not support in funcions
|
Stored Procedures cannot be used in the SQL
statements anywhere in the WHERE/HAVING/SELECT section
|
whereas Function can be.
|
Wednesday, 5 April 2017
What are the major difference's between Stored Procedure and Functions?
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