gonv create migration support tools. from https://github.com/howyi/conv
$ go get -u github.com/somen440/gonv
table schema
CREATE TABLE `sample` (
`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Sample ID',
`name` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT 'sample' COMMENT 'Sample Name',
`created` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Created Time',
`modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 'Modified Time',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='sample table'file schema
CREATE TABLE `sample` (
`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Sample ID',
`name` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT 'sample' COMMENT 'Sample Name',
`description` text COMMENT 'Sample description',
`created` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'Created Time',
`modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 'Modified Time',
PRIMARY KEY (`id`),
KEY `name` (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='sample table'diff result
❯ gonv diff -u root -p test -P 33066 test build/mysql/diff_schema
...
...
INFO: migrations
*************************** migration up ***************************
ALTER TABLE `sample`
ADD COLUMN `description` text COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT 'Sample description',
ADD INDEX `name` (`name`);
*************************** migration down ***************************
ALTER TABLE `sample`
DROP COLUMN `description`,
DROP INDEX `name`;
exec migration
mysql> ALTER TABLE `sample`
-> ADD COLUMN `description` text COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT 'Sample description',
-> ADD INDEX `name` (`name`);
Query OK, 0 rows affected (0.04 sec)
Records: 0 Duplicates: 0 Warnings: 0
after result
INFO: migrations
no migrations.
This project is licensed under the MIT License - see the LICENSE.md file for details