Hive 如何将数据从hdfs表导入配置单元中的嵌套分区表?
我在蜂巢里做了一个嵌套的分区表。 但我不知道如何将数据插入表中 我试过了 插入覆盖表方法 在蜂箱里Hive 如何将数据从hdfs表导入配置单元中的嵌套分区表?,hive,data-partitioning,Hive,Data Partitioning,我在蜂巢里做了一个嵌套的分区表。 但我不知道如何将数据插入表中 我试过了 插入覆盖表方法 在蜂箱里 create external table accounts_nested( first_name string, last_name string, zipcode string) partitioned by (state string, areacode string) row format delimited fields terminated by ',' location '/l
create external table accounts_nested(
first_name string, last_name string, zipcode string)
partitioned by (state string, areacode string)
row format delimited
fields terminated by ','
location '/loudacre/accounts_nested';
然后呢,
insert overwrite table accounts_nested(
partition(areacode)
select first_name, last_name, zipcode, state, areacode from accounts;
我在终端上看不到任何错误,但我看不到我插入的数据
我想查看accounts_嵌套表中的数据。您可以使用dinamic分区设置下一个参数
set hive.exec.dynamic.partition=true;
set hive.exec.dynamic.partition.mode=nonstrict;
下面是一个代码示例:
create table temp.accounts (
first_name string
,last_name string
,zipcode string
)
partitioned by (areacode string)
stored as parquet location '/temp.db/accounts' tblproperties("parquet.compression=SNAPPY")
;
insert into temp.accounts partition(areacode='0') values
('David','David','00')
,('Ellen', 'Ellen','00')
,('David','David','00')
,('David', 'David','00');
create external table temp.accounts_nested (
first_name string
,last_name string
,zipcode string
)
partitioned by (areacode string)
stored as parquet location '/temp.db/accounts_nested' tblproperties("parquet.compression=SNAPPY")
;
set hive.exec.dynamic.partition=true;
set hive.exec.dynamic.partition.mode=nonstrict;
insert overwrite table temp.accounts_nested
partition(areacode)
select first_name, last_name, zipcode, areacode from temp.accounts;
输出:
select * from temp.accounts_nested;
+-----------------------------+----------------------------+--------------------------+---------------------------+--+
| accounts_nested.first_name | accounts_nested.last_name | accounts_nested.zipcode | accounts_nested.areacode |
+-----------------------------+----------------------------+--------------------------+---------------------------+--+
| David | David | 00 | 0 |
| Ellen | Ellen | 00 | 0 |
| David | David | 00 | 0 |
| David | David | 00 | 0 |
+-----------------------------+----------------------------+--------------------------+---------------------------+--+