小编use*_*312的帖子

我在HIVE中编写代码来创建一个包含1300行和6列的表:

create table test1 as SELECT cd_screen_function,
     SUM(access_count) AS max_count,
     MIN(response_time_min) as response_time_min,
     AVG(response_time_avg) as response_time_avg,
     MAX(response_time_max) as response_time_max,
     SUM(response_time_tot) as response_time_tot,
     COUNT(*) as row_count
     FROM sheet WHERE  ts_update BETWEEN unix_timestamp('2012-11-01 00:00:00') AND 
     unix_timestamp('2012-11-30 00:00:00') and cd_office = '016'
     GROUP BY cd_screen_function ORDER BY max_count DESC, cd_screen_function;

现在我想添加另一列,access_count1其中包含所有1300行的唯一值,值将是sum(max_count).max_count是我现有表中的一列.我怎么能这样做？我试图通过此代码更改表ALTER TABLE test1 ADD COLUMNS (access_count1 int) set default sum(max_count);