MariaDB starting with 10.3
--------------------------
The GOTO statement was introduced in MariaDB 10.3 for Oracle compatibility.

Syntax
------

GOTO label

Description
-----------

The GOTO statement causes the code to jump to the specified label, and
continue operating from there. It is only accepted when in Oracle mode.

Example
-------

SET sql_mode=ORACLE;

DELIMITER //

CREATE OR REPLACE PROCEDURE p1 AS

BEGIN

SELECT 1;
 GOTO label;
 SELECT 2;
 <<label>>
 SELECT 3;

END;

//

DELIMITER

call p1();
+---+
| 1 |
+---+
| 1 |
+---+
1 row in set (0.000 sec)

+---+
| 3 |
+---+
| 3 |
+---+
1 row in set (0.000 sec)

URL: https://mariadb.com/kb/en/goto/