Hive：创建分区后使用目录分区的外部表（在 Location 中声明）

Question

I have this directory where the data are dumped:

"/externallocation/data/20191123/foo_table/part-00000.orc"

I need to create a external table, pointed to that directory refered above.
The below statement creates the table, but the query not work as expected (no record is returned):

> CREATE EXTERNAL TABLE IF NOT EXISTS foo_table (a_column string, b_column boolean)
PARTITIONED BY (year_month_day_key string)
STORED AS ORC LOCATION '/externallocation/data';

> SELECT * FROM foo_table WHERE year_month_day_key = '20191123';

Could somone now what is wrong. Thanks in advance.

Answer 1

Here is the complete solution -

File already exists on the HDFS directory "/user/hive/warehouse/schema.db/foo_table/year_month_day_key=20191123/000000_0"

Now Create Table CREATE EXTERNAL TABLE IF NOT EXISTS schema.foo_table (a_column string, b_column int) PARTITIONED BY (year_month_day_key string) STORED AS ORC LOCATION 'hdfs://nameservice1/user/hive/warehouse/schema.db/foo_table';

Partition needs to be added after table creation through below Alter command ALTER TABLE schema.foo_table ADD PARTITION (year_month_day_key = '20191123');

select * from schema.foo_table where year_month_day_key = '20191123';

select * from schema.foo_table;