hive不能使用not in怎么办

最新推荐文章于 2025-06-12 17:12:17 发布

lazyman001

最新推荐文章于 2025-06-12 17:12:17 发布

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分类专栏： hive 文章标签： hive hadoop 数据仓库

本文链接：https://blog.youkuaiyun.com/lazyman001/article/details/121224061

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该博客讨论了如何利用leftjoin查询优化大数据处理，并提出在主表为大表的情况下，通过筛选null值来获取notin的数据。同时，分享了一个使用shell脚本配合分区表进行按日期迭代处理的示例，以提高数据处理效率。

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1 建议用left join代替，主表要为大表，然后附表中的字段为null晒选出去这样就可以查出not in 的数据

              SELECT a.court_id,
                     sum(if(a.id_count >= 1, 1, 0)) house_count,
                     a.day_time
              from (
                     select
                      n.court_id,
                      n.house_no,
                      count(distinct  n.id )  id_count,
                      ${end_day}  day_time
                     from
                     (
                      SELECT r.court_id,
                              h.house_no,
                              r.id
                       FROM dwd_smart_community.dwd_house_info h
                                JOIN dwd_smart_community.dwd_person_resident_info r
                                     ON h.court_id = r.court_id
                                         AND h.building_no = r.building_no
                                         AND h.unit_no = r.unit_no
                                         AND h.house_no = r.house_no
                        where concat(substr(r.create_time, 1, 4), substr(r.create_time, 6, 2),
                        substr(r.create_time, 9, 2)) <= ${end_day}
                        ) n
                     left join
                       (
                       SELECT t2.court_id,
                              t1.house_no,
                              t2.id
                       FROM dwd_smart_community.dwd_house_info t1
                                JOIN dwd_smart_community.dwd_person_resident_info t2
                                     ON t1.court_id = t2.court_id
                                         AND t1.building_no = t2.building_no
                                         AND t1.unit_no = t2.unit_no
                                         AND t1.house_no = t2.house_no
                        where  concat(substr(t2.create_time, 1, 4), substr(t2.create_time, 6, 2),
                        substr(t2.create_time, 9, 2)) < ${end_day}
                        ) m
                        on  n.court_id = m.court_id and n.house_no = m.house_no
                        where m.house_no is null and m.court_id is null and m.id is null
                       GROUP BY n.court_id,
                                n.house_no
                   ) a
              GROUP BY a.court_id,
                       a.day_time

2 如果使用分区表后可以使用shell脚本

#!/usr/bin/env bash

startdate="$1"

enddate="$2"
echo 'startdate: '$startdate

echo 'enddate: '$enddate

echo "-----------------------------------"

#序列1-300，表示遍历300次，因为有结束时间的限制，所以实际上不会循环300次

for i in `seq 1 300`; do

#当开始时间大于结束时间时，直接结束脚本

if [[ $enddate -lt $startdate ]]; then

break

fi

echo $startdate

#执行hiveSQL脚本，我是需要按日期执行hiveSQL，这里可以无视

hive -e "
-- 防止中文乱码

set spark.driver.extraJavaOptions=-Dfile.encoding=utf-8;
set spark.executor.extraJavaOptions=-Dfile.encoding=utf-8;
set yarn.app.mapreduce.am.admin-command-opts=-Dfile.encoding=UTF-8;

SET hive.strict.checks.type.safety = false;
set hive.exec.dynamic.partition = true;
set hive.exec.dynamic.partition.mode=nonstrict;
SET hive.exec.max.dynamic.partitions = 10000;
SET hive.exec.max.dynamic.partitions.pernode = 10000;
INSERT overwrite TABLE dws_smart_community.dws_house_info partition (day_time)
select c.region_code,
       c.region_name,
       c.street_code,
       c.street_name,
       c.community_code,
       c.community_name,
       c.court_code,
       c.court_name  ,
       t.house_count house_count,
       t.toauditnum toauditnum,
       '${startdate}'       day_time
from (
         select nvl(x.court_id, y.court_id) court_code,
                nvl(y.house_count, 0)       house_count,
                nvl(x.toauditnum, 0)        toauditnum,
                nvl(x.day_time, y.day_time) day_time
         from (
                  select t.court_id,
                         t.toauditnum,
                         t.day_time
                  from (
                           SELECT court_id,
                                  sum(if(states = 1, 1, 0))         toauditnum,
                                  concat(substr(create_time, 1, 4), substr(create_time, 6, 2),
                                         substr(create_time, 9, 2)) day_time
                           FROM dwd_smart_community.dwd_person_resident_info
                           where length(concat(substr(create_time, 1, 4), substr(create_time, 6, 2),
                                               substr(create_time, 9, 2))) = 8
                                               and
                                 concat(substr(create_time, 1, 4), substr(create_time, 6, 2),
                                 substr(create_time, 9, 2)) = '${startdate}'
                           GROUP BY court_id,
                                    concat(substr(create_time, 1, 4), substr(create_time, 6, 2),
                                           substr(create_time, 9, 2))
                       ) t
              ) x
                  full outer join
              (
                  SELECT a.court_id,
                         sum(if(a.id_count >= 1, 1, 0)) house_count,
                         a.day_time
                  from (
                         select
                          n.court_id,
                          n.house_no,
                          count(distinct  n.id )  id_count,
                          ${startdate}  day_time
                         from
                         (
                          SELECT r.court_id,
                                  h.house_no,
                                  r.id
                           FROM dwd_smart_community.dwd_house_info h
                                    JOIN dwd_smart_community.dwd_person_resident_info r
                                         ON h.court_id = r.court_id
                                             AND h.building_no = r.building_no
                                             AND h.unit_no = r.unit_no
                                             AND h.house_no = r.house_no
                            where concat(substr(r.create_time, 1, 4), substr(r.create_time, 6, 2),
                            substr(r.create_time, 9, 2)) <= ${startdate}
                            ) n
                         left join
                           (
                           SELECT t2.court_id,
                                  t1.house_no,
                                  t2.id
                           FROM dwd_smart_community.dwd_house_info t1
                                    JOIN dwd_smart_community.dwd_person_resident_info t2
                                         ON t1.court_id = t2.court_id
                                             AND t1.building_no = t2.building_no
                                             AND t1.unit_no = t2.unit_no
                                             AND t1.house_no = t2.house_no
                            where  concat(substr(t2.create_time, 1, 4), substr(t2.create_time, 6, 2),
                            substr(t2.create_time, 9, 2)) < ${startdate}
                            ) m
                            on  n.court_id = m.court_id and n.house_no = m.house_no
                            where m.house_no is null and m.court_id is null and m.id is null
                           GROUP BY n.court_id,
                                    n.house_no
                       ) a
                  GROUP BY a.court_id,
                           a.day_time
              ) y
              on x.court_id = y.court_id and x.day_time = y.day_time
     ) t
         join
     (
         select region_code
              , region_name
              , street_code
              , street_name
              , community_code
              , community_name
              , court_code
              , court_name
         from dim_smart_community.dim_area_info
         where court_code <> ''
     ) c
     on t.court_code = c.court_code
;

"

#每次执行后，使开始日期减一天，如果要正序，将下面-1换成+1即可，当然开始时间和结束时间也要换一下

startdate=$(date -d "$startdate +1 day" +%Y%m%d)

done