如何在配置单元的分区数据中创建表?

unguejic  于 2021-06-26  发布在  Hive
关注(0)|答案(1)|浏览(360)
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/_impala_insert_staging
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI
[mgupta@sjc-dev-binn01 ~]$ hadoop fs -ls /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI
Found 27 items
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201601
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201602
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201603
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201604
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201605
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201606
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201607
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201608
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201609
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201610
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201611
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201612
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201701
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201702
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201703
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201704
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201705
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201706
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:17 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201707
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201708
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201709
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201710
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201711
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201712
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201801
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201802
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:18 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201803
[mgupta@sjc-dev-binn01 ~]$ hadoop fs -ls /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201601
Found 3 items
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201601/company_sid=0
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201601/company_sid=38527
drwxr-xr-x   - mgupta supergroup          0 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201601/company_sid=__HIVE_DEFAULT_PARTITION__
[mgupta@sjc-dev-binn01 ~]$ hadoop fs -ls /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201601/company_sid=0
Found 1 items
-rw-r--r--   3 mgupta supergroup    2069014 2018-03-26 22:16 /kylin/retailer/qi_basket_brand_bucket_fact/product_hierarchy_type=CI/month_id=201601/company_sid=0/f9466a0068b906cf-6ace7f8500000049_294515768_data.0.parq
[mgupta@sjc-dev-binn01 ~]$
kiz8lqtg

kiz8lqtg1#

您可以尝试以下步骤。
方法1
标识架构(列名和类型,包括分区列)
创建配置单元分区表(确保添加分区列和分隔符信息)
将数据加载到分区表中。(在这种情况下,加载文件将没有分区列,因为您将通过 load (命令)

create table <table_name> (col1 data_type1, col2 data_type2..)
partitioned by(part_col data_type3)
row format delimited
fields terminated by '<field_delimiter_in_your_data>'

load data inpath '/hdfs/loc/file1' into table <table_name>
partition (<part_col>='201601');

load data inpath '/hdfs/loc/file1' into table <table_name>
partition (<part_col>='201602')

load data inpath '/hdfs/loc/file1' into table <table_name>
partition (<part_col>='201603')

等等。
方法2
创建一个暂存表(临时表),其模式与主表相同,但没有任何分区
将整个数据加载到此表中(确保“partition column”是这些文件中的字段之一)
使用动态分区插入将数据从暂存表加载到主表。

create table <staging_table> (col1 data_type1, col2 data_type2..)
row format delimited
fields terminated by '<field_delimiter_in_your_data>'

create table <main_table> (col1 data_type1, col2 data_type2..)
partitioned by(part_col data_type3);

load data inpath '/hdfs/loc/directory/' into table <staging_table>;

SET hive.exec.dynamic.partition=true; 
SET hive.exec.dynamic.partition.mode=nonstrict;

insert into table <main_table> 
partition(part_col) 
select col1,col2,....part_col from <staging_table>;

方法2的关键方面是:
使“part\u col”作为加载文件中的字段可用
在最后的insert语句中,从select子句中获取“part\u col”作为最后一个字段。

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