mysql 批量更新数据库主键为int，bigint 类型，字段为自增类型

 select table_name,
       concat('alter table `',table_name,'` MODIFY ', column_name, ' ', data_type ,' auto_increment;') as 'query script'
  from information_schema.columns c
 where c.table_schema = 'pv_2'
   and c.column_key ='PRI' 
   and c.data_type in ( 'int','bigint')
   and c.extra <> 'auto_increment'
 order by table_name;