分区表的分区统计信息

例如 exec dbms_stats.gather_table_stats(ownname => 'JGPT_LN',tabname => 'YW_LS_PINGTAIBJ',partname =>'YW_LS_PINGTAIBJ_20180507',       estimate_percent => 100,method_opt=> 'for all indexed columns',cascade=>TRUE) ;