mysqldump -h ~.~.~.rds.amazonaws.com -u admin -p violet --skip-lock-tables --column-statistics=0 > b.sql
github-release upload \
--owner project-violet \
--repo server-database-backup \
--tag ~ \
--release-name ~ \
--body "" \
--token ~ \
--prerelease=false \
violet-~.sql
https://dev.mysql.com/doc/internals/en/optimizer-index-merge-join-type.html