今天数据库迁移测试，发现存储过程导入不了，提示如下错误:

Cannot load from mysql.proc. The table is probably corrupted

原因是mysql5.5版本后proc表中comment字段类型由char改成了text

解决方法:

ALTER TABLE `proc`

MODIFY COLUMN `comment`  text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL AFTER `sql_mode`;

再重新用source命令导入就ok了