MySQL数据导入sql文件过程中出错

错误类型：

ERROR 1231 (42000): Variable 'time_zone' can't be set to the value of 'NULL'

ERROR 1231 (42000): Variable 'sql_mode' can't be set to the value of 'NULL'

ERROR 1231 (42000): Variable 'foreign_key_checks' can't be set to the value of 'NULL'

ERROR 1231 (42000): Variable 'unique_checks' can't be set to the value of 'NULL'

ERROR 1231 (42000): Variable 'character_set_client' can't be set to the value of 'NULL'

ERROR 1231 (42000): Variable 'collation_connection' can't be set to the value of 'NULL'

ERROR 1231 (42000): Variable 'sql_notes' can't be set to the value of 'NULL'

解决方式：也可能为数据库函数功能未开启

　方式一：　

　　　　mysql> set max_allowed_packet=1024M;  --只对当前会话生效

　　　　mysql> source ./xxxx.sql;

　方式二：　永久生效修改my.cnf

　　　　[root@localhost ~]# vim /etc/my.cnf
　　　　[mysqld]
　　　　　　max_allowed_packet = 500M
 
　　　　[mysqldump]
　　　　　　quick
　　　　　　max_allowed_packet = 500M
 
参考文章：http://www.bubuko.com/infodetail-646948.html