set hive.merge.mapfiles=true; set hive.merge.mapredfiles=true; set hive.input.format=org.apache.hadoop.hive.ql.io.HiveInputFormat; set hive.exec.dynamic.partition=true; set hive.exec.dynamic.partition.mode=nonstrict; create table nzhang_part like srcpart; explain insert overwrite table nzhang_part partition (ds='2010-08-15', hr) select key, value, hr from srcpart where ds='2008-04-08'; insert overwrite table nzhang_part partition (ds='2010-08-15', hr) select key, value, hr from srcpart where ds='2008-04-08'; select * from nzhang_part; explain insert overwrite table nzhang_part partition (ds='2010-08-15', hr=11) select key, value from srcpart where ds='2008-04-08'; insert overwrite table nzhang_part partition (ds='2010-08-15', hr=11) select key, value from srcpart where ds='2008-04-08'; select * from nzhang_part; explain insert overwrite table nzhang_part partition (ds='2010-08-15', hr) select * from ( select key, value, hr from srcpart where ds='2008-04-08' union all select '1' as key, '1' as value, 'file,' as hr from src limit 1) s; insert overwrite table nzhang_part partition (ds='2010-08-15', hr) select * from ( select key, value, hr from srcpart where ds='2008-04-08' union all select '1' as key, '1' as value, 'file,' as hr from src limit 1) s; show partitions nzhang_part; select * from nzhang_part where hr = 'file,';