Add forked Maatkit tools in bin/ and their tests in t/.

t/pt-online-schema-change/samples/fk_tables_schema.sql

@@ -0,0 +1,31 @@
+DROP DATABASE IF EXISTS `mkosc`;
+CREATE DATABASE `mkosc`;
+USE `mkosc`;
+
+CREATE TABLE `country` (
+  `country_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
+  `country` varchar(50) NOT NULL,
+  `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY (`country_id`)
+) ENGINE=InnoDB;
+
+CREATE TABLE `city` (
+  `city_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
+  `city` varchar(50) NOT NULL,
+  `country_id` smallint(5) unsigned NOT NULL,
+  `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY (`city_id`),
+  KEY `idx_fk_country_id` (`country_id`),
+  CONSTRAINT `fk_city_country` FOREIGN KEY (`country_id`) REFERENCES `country` (`country_id`) ON UPDATE CASCADE
+) ENGINE=InnoDB;
+
+CREATE TABLE `address` (
+  `address_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
+  `address` varchar(50) NOT NULL,
+  `city_id` smallint(5) unsigned NOT NULL,
+  `postal_code` varchar(10) DEFAULT NULL,
+  `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY (`address_id`),
+  KEY `idx_fk_city_id` (`city_id`),
+  CONSTRAINT `fk_address_city` FOREIGN KEY (`city_id`) REFERENCES `city` (`city_id`) ON UPDATE CASCADE
+) ENGINE=InnoDB;