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create table address like sakila.address; insert into address select * from sakila.address; create table city like sakila.city; insert into city select * from sakila.city; create table country like sakila.country; insert into country select * from sakila.country; UPDATE address INNER JOIN city ON address.city_id = city.city_id INNER JOIN country ON city.country_id = country.country_id SET postal_code = CONCAT('111', postal_code) WHERE country.country = 'Canada' AND address.postal_code <> '0';

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