MySQL 其他架构转组复制表设计前提

组复制表设计强制要求：

• InnoDB存储引擎：数据必须存储在InnoDB事务存储引擎中。

• 主键：组要复制的每个表都必须定义显式主键。

1、首先检查表存储引擎，要全部为innodb引擎

SELECT table_schema, table_name, engine, table_rows, 
       (index_length+data_length)/1024/1024 AS sizeMB 
FROM information_schema.tables 
WHERE engine != 'innodb' 
  AND table_schema NOT IN 
    ('information_schema', 'mysql', 'performance_schema');

2、有没有有效的组复制设计的表 ，没有主键的表 结果要为空

SELECT tables.table_schema , tables.table_name , tables.engine 
FROM information_schema.tables 
LEFT JOIN ( 
   SELECT table_schema , table_name 
   FROM information_schema.statistics 
   GROUP BY table_schema, table_name, index_name HAVING 
     SUM( case when non_unique = 0 and nullable != 'YES' then 1 else 0 end ) = count(*) ) puks 
 ON tables.table_schema = puks.table_schema and tables.table_name = puks.table_name 
 WHERE puks.table_name is null 
   AND tables.table_type = 'BASE TABLE' AND Engine="InnoDB";