[英]Hive- how do I “create table as select..” with partitions from original table?
I need to create a "work table" from our hive dlk. 我需要从我们的蜂巢dlk创建一个“工作表”。 While I can use:
虽然我可以使用:
create table my_table as
select *
from dlk.big_table
just fine, I have problem with carrying over partitions (attributes day
, month
and year
) from original "big_table" or just creating new ones from these attributes. 很好,我在从原始“ big_table”继承分区(属性
day
, month
和year
)或仅从这些属性创建新分区时遇到问题。 Searching the web did not really helped me answer this question- all "tutorials" or solutions deal either with create as select
OR creating partitions, never both. 搜索网络并没有真正帮助我回答这个问题-所有“教程”或解决方案要么处理“
create as select
创建”,要么创建分区,但绝不会两者兼有。 Can anybody here please help? 请问有人可以帮忙吗?
Creating partitioned table as select is not supported. 不支持将分区表创建为select。 You can do it in two steps:
您可以分两个步骤进行操作:
create table my_table like dlk.big_table;
This will create table with the same schema. 这将创建具有相同架构的表。
Load data. 加载数据。
set hive.exec.dynamic.partition=true; set hive.exec.dynamic.partition.mode=nonstrict;
insert overwrite table my_table partition (day, month, year) select * from dlk.big_table;
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