[errata] sql error on page 103

[wfhu]

On page 103, Listing 6-2, you write a sql like this:
mysql> SET @query = 'SELECT * FROM world.city INNER JOIN world.city ON country.Code = city.CountryCode';

I think it should be like this:
mysql> SET @query = 'SELECT * FROM world.city INNER JOIN world.country ON country.Code = city.CountryCode';

There is an error because you are joining the same table ("world.city") instead of joining a different table.

I do not see any errata, so I created this issue. Maybe it's time to create an errata now.