Error: 1054 Unknown column 'keyword_relationships.rank' in 'order clause'

The following SQL statement was executed:
select * from (select distinct properties_rent.* from properties_rent,property_keywords where property_keywords.keyword_id='1989' and property_keywords.property_id=properties_rent.id and properties_rent.id!='2203810' and properties_rent.block is null and properties_rent.status!='n' order by property_keywords.rank desc ) sponsors union select * from ( select properties_rent.* from properties_rent, keyword_relationships where properties_rent.keyword_id=keyword_relationships.related_keyword_id and keyword_relationships.keyword_id='1989' and properties_rent.block is null and properties_rent.status ='n' and properties_rent.id!='2203810' order by keyword_relationships.rank desc, properties_rent.id desc ) normal limit 0,8

Error: 0

The following SQL statement was executed:
select count(*) counter from properties_rent where telephone = '15951885875' and block is null

南京建邺南京出租房-河西奥体滨江奥城
在南京租房子  南京找房子：  非中介  

南京出租房-河西奥体滨江奥城

    发布日期：2008年05月07日
  • 建邺
  • 河西奥体滨江奥城
  • 2室1厅
  • 第1层/总17层
  • 99平方米
  • 2000 元/月
    		•
  • 水电,宽带,管道煤气,有线电视,电梯,车位
  • 全新精装房，整体厨房，大厅地砖，房间复合地板，舒适大床，电视，电梯，有线，卫生间淋浴器一应俱全，真正的拎包即住，周围空气新鲜鸟语花香

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