SELECT FILEID,ID,DATADATE,SCHEDID,JOINTAG,PARMS,
LAST_VALUE(SCHEDID) OVER(PARTITION BY FILEID ORDER BY SCHEDID
ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) MAX_SCHEDID
FROM RPT_ETL.DATASYN_EXP_LOG
请问各位大神 为什么我按照别人博客写的over函数测试,别人的max有数据我的max_schedid没有数据?求解,,也刚刚了解over函数,求大神指点