求助调用存储过程出来 Cursor is closed 问题

里面的游标，O_EVAL_RESLUT是有记录的吗？SELECT V_SUPPLIER_SCORE AS SUPPLIER_SCORE, V_CONTRACT_SCORE AS CONTRACT_SCORE, V_SERVICE_RESPONSE_SCORE AS SERVICE_RESPONSE_SCORE, V_BUSINESS_TREAT_SCORE ASBUSINESS_TREAT_SCORE  
  , V_ARRIVE_UNSUFFICE_SCORE AS ARRIVE_UNSUFFICE_SCORE
  ,V_DAY_PICK_SUCCESS_SCORE AS DAY_PICK_SUCCESS_SCORE, V_QUALITY_EVALUATE_SCORE AS QUALITY_EVALUATE_SCORE,V_QUALITY AS QUALITY, V_SERVICE AS SERVICE, V_SUPPLIER AS SUPPLIER FROM DUAL;这一段sql查的是什么？V_SUPPLIER_SCORE，V_CONTRACT_SCORE...这些都是什么？是定义的变量吗？看楼主是从dual表里查的。