fix non-int pk issues
fix non-int pk issues

vCaesar/xorm,evalphobia/xorm,go-xorm/xorm,go-xorm/xorm,vCaesar/xorm,henrylee2cn/xorm,aviau/xorm,evalphobia/xorm,zj8487/xorm,henrylee2cn/xorm,toophy/xorm,tempbottle/xorm,toophy/xorm,Michael2008S/xorm,zj8487/xorm,ymhhh/xorm,zileyuan/xorm,ymhhh/xorm,Michael2008S/xorm,aviau/xorm,zileyuan/xorm,tempbottle/xorm