Syntax
------ 
SHOW PROCEDURE CODE proc_name
 
Description
----------- 
This statement is a MariaDB extension that is available only
for servers that
have been built with debugging support. It displays a
representation of the
internal implementation of the named stored procedure. A
similar statement,
 SHOW FUNCTION CODE, displays
information about stored functions.
 
Both statements require that you be the owner of the routine
or have
 SELECT access to the mysql.proc table.
 
If the named routine is available, each statement produces a
result
set. Each row in the result set corresponds to one
"instruction" in
the routine. The first column is Pos, which is an ordinal
number
beginning with 0. The second column is Instruction, which
contains an
SQL statement (usually changed from the original source), or
a
directive which has meaning only to the stored-routine
handler.
 
Examples
-------- 
DELIMITER //
 
CREATE PROCEDURE p1 ()
 BEGIN
 DECLARE fanta INT DEFAULT 55;
 DROP TABLE t2;
 LOOP
 INSERT INTO t3 VALUES (fanta);
 END LOOP;
 END//
Query OK, 0 rows affected (0.00 sec)
 
SHOW PROCEDURE CODE p1//
+-----+----------------------------------------+
| Pos | Instruction |
+-----+----------------------------------------+
| 0 | set fanta@0 55 |
| 1 | stmt 9 "DROP TABLE t2" |
| 2 | stmt 5 "INSERT INTO t3 VALUES (fanta)" |
| 3 | jump 2 |
+-----+----------------------------------------+
 


URL: https://mariadb.com/kb/en/show-procedure-code/