by Séverin Terrier.
Hi Carlo,
I really hope that you're really talking about columns course and section in mdl_course_sections.
DESC mdl_course_sections;
+---------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+---------------+--------------+------+-----+---------+----------------+
| id | bigint(10) | NO | PRI | NULL | auto_increment |
| course | bigint(10) | NO | MUL | 0 | |
| section | bigint(10) | NO | | 0 | |
| name | varchar(255) | YES | | NULL | |
| summary | longtext | YES | | NULL | |
| summaryformat | tinyint(2) | NO | | 0 | |
| sequence | longtext | YES | | NULL | |
| visible | tinyint(1) | NO | | 1 | |
| availability | longtext | YES | | NULL | |
+---------------+--------------+------+-----+---------+----------------+
Sorry I don't have an answer to your question.
It could be useful if you could share what you've done to allow making a backup about one section only.
Séverin