Minimum GRANTs needed by mysqldump for dumping a full schema? (TRIGGERs are missing!!)

Question

I have a MySQL user called dump with the following perms:

GRANT USAGE ON *.* TO 'dump'@'%' IDENTIFIED BY ...
GRANT SELECT, LOCK TABLES ON `mysql`.* TO 'dump'@'%'
GRANT SELECT, LOCK TABLES ON `myschema`.* TO 'dump'@'%'

I want to dump all data (included triggers and procedures) using the dump user. I call mysqldump in the following way:

mysqldump -u dump -p --routines --triggers --quote-names --opt \
    --add-drop-database --databases myschema > myschema.sql

Everything is OK with the dumped file except for the triggers, they are missing!!

The triggers are dumped correctly if I try mysqldump with root MySQL user:

mysqldump -u root -p --routines --triggers --quote-names --opt \
    --add-drop-database --databases myschema > myschema.sql

So, I guess it is a perms issue... what are the extra grants my dump MySQL user needs for doing the full dump correctly?

Answer 1

Assuming by full dump you also mean the VIEWs and the EVENTs, you would need:

GRANT USAGE ON *.* TO 'dump'@'%' IDENTIFIED BY ...;
GRANT SELECT, LOCK TABLES ON `mysql`.* TO 'dump'@'%';
GRANT SELECT, LOCK TABLES, SHOW VIEW, EVENT, TRIGGER ON `myschema`.* TO 'dump'@'%';

and if you have VIEWs that execute a function, then unfortunately you also need EXECUTE.

My own problem is: why do I need SELECT if I only want to make a no-data dump?