mysql如何比对两个数据库表结构的方法

brew install caskroom/cask/mysql-connector-python
brew install caskroom/cask/mysql-utilities

mysqldiff --version
MySQL Utilities mysqldiff version 1.6.5 
License type: GPLv2

mysqldiff --server1=root@host1 --server2=root@host2 --difftype=sql db1.table1:dbx.table3

create database testa;
create database testb;

use testa;

CREATE TABLE `tba` (
 `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
 `name` varchar(25) NOT NULL,
 `age` int(10) unsigned NOT NULL,
 `addtime` int(10) unsigned NOT NULL,
 PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1001 DEFAULT CHARSET=utf8;

insert into `tba`(name,age,addtime) values('fdipzone',18,1514089188);

use testb;

CREATE TABLE `tbb` (
 `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
 `name` varchar(20) NOT NULL,
 `age` int(10) NOT NULL,
 `addtime` int(10) NOT NULL,
 PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

insert into `tbb`(name,age,addtime) values('fdipzone',19,1514089188);

mysqldiff --server1=root@localhost --server2=root@localhost --changes-for=server2 --difftype=sql testa.tba:testb.tbb;
# server1 on localhost: ... connected.
# server2 on localhost: ... connected.
# Comparing testa.tba to testb.tbb                 [FAIL]
# Transformation for --changes-for=server2:
#

ALTER TABLE `testb`.`tbb` 
 CHANGE COLUMN addtime addtime int(10) unsigned NOT NULL, 
 CHANGE COLUMN age age int(10) unsigned NOT NULL, 
 CHANGE COLUMN name name varchar(25) NOT NULL, 
RENAME TO testa.tba 
, AUTO_INCREMENT=1002;

# Compare failed. One or more differences found.

mysql> ALTER TABLE `testb`.`tbb` 
  ->  CHANGE COLUMN addtime addtime int(10) unsigned NOT NULL, 
  ->  CHANGE COLUMN age age int(10) unsigned NOT NULL, 
  ->  CHANGE COLUMN name name varchar(25) NOT NULL;
Query OK, 0 rows affected (0.03 sec)

mysqldiff --server1=root@localhost --server2=root@localhost --changes-for=server2 --difftype=sql testa.tba:testb.tbb;
# server1 on localhost: ... connected.
# server2 on localhost: ... connected.
# Comparing testa.tba to testb.tbb                 [FAIL]
# Transformation for --changes-for=server2:
#

ALTER TABLE `testb`.`tbb` 
RENAME TO testa.tba 
, AUTO_INCREMENT=1002;

# Compare failed. One or more differences found.

mysqldiff --server1=root@localhost --server2=root@localhost --changes-for=server2 --skip-table-options --difftype=sql testa.tba:testb.tbb;
# server1 on localhost: ... connected.
# server2 on localhost: ... connected.
# Comparing testa.tba to testb.tbb                 [PASS]
# Success. All objects are the same.