Stored procedures allow developers to encapsulate business logic and rules in the database for improved maintainability, testability, security, and performance. The Mule Database component supports executing stored procedures. A developer can create a stored procedure in their database, then call it from a Mule flow using the Database component by specifying the stored procedure name. This retrieves data from the database and executes the stored procedure logic.

1. By Anirban Sen Chowdhary

2. Before we start let’s look what actually a stored procedure is.
Stored procedure :- A stored procedure which is also called
proc, storp, sproc, StoPro,StoredProc, StoreProc, sp or SP is actually
stored in the database data dictionary.
Source:- Wikipidea

3. The main advantages of Stored procedure are :-
Maintainability
It is easier to maintain scripts containing stored procedure
Testing
It can be tested independent of the application
Isolation of Business Rules
Having Stored Procedures in one location means that business rules are
separated from disparate code files in the application
Speed / Optimization
Stored procedures can be cached on the server
Execution plans for the process are easily reviewable without having to run
the application
Security
It limit direct access to tables via defined roles in the database and also
provide an "interface" to the underlying data structure so that all
implementation and even the data itself is shielded.

4. How are Stored procedure called :-
Through
CALL procedure(...)
or
EXECUTE procedure(...)

5. So, Do Mule Database component supports Stored procedure and
how can we run a Stored procedure from Mule Database component ????

6. Yes, Mule Database component supports executing Stored procedure

7. So let us create a Stored Procedure in our database:, I used SQL server in
my case-

8. You can see the how our Stored procedure is created.
Let our Stored procedure name be testStoredProccedure , and this
Stored procedure will retrieve all the data from Database:-

9. Now we click execute button as below, our testStoredProccedure is
created :-

10. So, our Mule flow will be following :-
This Mule flow will retrieve all the data from Database using the
Stored procedure

11. Our Mule config will be following :-
You can see the database component is calling the Stored procedure
testStoredProccedure

12. Now, lets hit the url http://localhost:8081 and test our application:-
If you now check the console you will find the Stored procedure is
executed and data are retrieved from Database

13. That’s it … Now you can try this example by your own and can execute
your Stored procedure ..
Hope you enjoyed this little trick …
Happy coding and share your knowledge everywhere 