add column in sql

1ALTER TABLE Customers
2ADD Email varchar(255);
3

1ALTER TABLE table_name
2ADD column_name datatype;
3
4--example
5ALTER TABLE Customers
6ADD Email varchar(255);

1ALTER TABLE table_name 
2ALTER COLUMN column_name new_data_type(size);
3

1ALTER TABLE table_name ADD column_name varchar(50);

1ALTER TABLE table_name
2ADD column_name datatype;

1ALTER TABLE `fb_banners`
2ADD `city_id` BIGINT(20) UNSIGNED NULL DEFAULT NULL AFTER `BannerID`,
3ADD INDEX `Foreign_city_id_banners` (`city_id`) USING BTREE,
4ADD CONSTRAINT `Foreign_city_id_banners` FOREIGN KEY (`city_id`) REFERENCES `foodsafari`.`fb_cities` (`id`) ON UPDATE CASCADE ON DELETE CASCADE;