设置mysql max_allowed_packet

show VARIABLES like '%max_allowed_packet%';

set global max_allowed_packet = 2*1024*1024*10;

设置完成后，重新登陆就可以。

alter table contract add realinfo_uid varchar(255);
alter table contract add realinfo_order varchar(255);
alter table user_info add realInfo_Order varchar(255);
alter table user_info add realInfo_Uid varchar(255);

设置主键自增长值
alter table contract AUTO_INCREMENT = 2;