hive中执行sql语句出现数据类型问题

当在执行Hive sql时候，用到了下面的语句：sql select concat(session_id, '@@', apk_id) as sid, package_name, 1 is_install   from table_xxx  where report_date = '20150905'  group by package_name, session_id, apk_id   hav

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