\! rm -f /tmp/ivan_alter.sql #预删除临时文件，方式下面的语句无法写入

SELECT concat(‘alter table `’, TABLE_SCHEMA, ‘`.`’, TABLE_NAME, ‘` engine=innodb;’)
FROM information_schema.TABLES
WHERE ENGINE=‘Myisam’ AND
      TABLE_SCHEMA<>‘mysql’ AND
      TABLE_SCHEMA<>‘information_schema’
INTO OUTFILE ‘/tmp/ivan_alter.sql’ ;

source /tmp/ivan_alter.sql

\! rm -f /tmp/ivan_alter.sql #执行完后删除临时文件