`data.sql` commit

project/backend_springboot/src/main/resources/data.sql

@@ -0,0 +1,5 @@
+-- Insert roles into the role table if they do not already exist
+INSERT INTO role (name) SELECT 'ROLE_ADMIN' WHERE NOT EXISTS (SELECT * FROM role WHERE role.name='ROLE_ADMIN');
+INSERT INTO role (name) SELECT 'ROLE_STUDENT' WHERE NOT EXISTS (SELECT * FROM role WHERE role.name='ROLE_STUDENT');
+INSERT INTO role (name) SELECT 'ROLE_TEACHER' WHERE NOT EXISTS (SELECT * FROM role WHERE role.name='ROLE_TEACHER');
+