创建临时表插入数据错误,急,谢谢!pc2phone=# CREATE TABLE temp as select fdest_phone_country_code,fdest_phone_country_name,sum(fcall_time),sum(fcall_cost) from t_prepaid_history where to_char(fcall_start_time,'YYYYMMDDHH24MISS')>='20080901000000' and to_char(fcall_start_time,'YYYYMMDDHH24MISS')<='20080930235959' group by fdest_phone_country_code,fdest_phone_country_name order by fdest_phone_country_code;
ERROR: column name "sum" specified more than once
ERROR: column name "sum" specified more than once
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