PostgreSQL and MySQL - Dump all databases into separate files

mysql.fish

for db in (mysql -u root -e "SHOW DATABASES WHERE `Database` NOT LIKE '%test%'" -s --skip-column-names);
  mysqldump -u root --single-transaction (string trim $db) > (string trim $db).dump;
end

postgresql-with-docker.fish

for db in (docker exec -i pg12 psql -U postgres -t -c "SELECT datname FROM pg_database WHERE datname NOT ILIKE '%_test%' AND datname NOT IN ('postgres', 'template0', 'template1')");
  docker exec -i pg12 pg_dump (string trim $db) -U postgres --no-owner --no-acl --clean --create --if-exists -F custom > (string trim $db).dump;
end

postgresql.fish

for db in (psql -t -c "SELECT datname FROM pg_database WHERE datname NOT ILIKE '%_test%'");
  pg_dump (string trim $db) --no-owner --no-acl --clean --create --if-exists -F custom > (string trim $db).dump;
end