Differences between functions and stored procedures?
Answer Posted / samba shiva reddy . m
1. Functions are compiled and executed at run time.
Stored procedures are stored in parsed and compiled format in the database(Pree compiled).
2. Functions cannot affect the state of the database which means we cannot perform insert,delete,update and create operations on the database.
Stored Procedures can affect the state of the database by using insert,delete,update and create operations.
3 Functions are basically used to compute values. We passes some parameters to functions as input and then it performs some operations on the parameter and return output.
Stored procedures are basically used to process the task.
4.Function can not change server environment and our operating system environment.
Stored procedures can change server environment and our operating system environment.
5.Functions can invoked from SQL Statements.
example : select udf from table name
Stored procedures can't invoked from SQL staements.
example : select spname from table name
6.Functions can run an executable file from SQL SELECT or an action query.
operating system use Execute or Exec to run
7.We can use User Defined function in Stored procedure
we can't use stored procedure in UDF.
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