快速查询分区表各个分区的记录数

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select t.table_name,t.partition_name,t.num_rows,t.last_analyzed from dba_tab_partitions t where t.table_name = 'table name';
--做一次表分析
exec dbms_stats.gather_table_stats(ownname=>'PINTEST',tabname=>'BILLLOG_T',granularity=>'ALL');

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