Hive: Partitioning by part of integer column - hive

Question

I want to create an external Hive table, partitioned by record type and date (year, month, day). One complication is that the date format I have in my data files is a single value integer yyyymmddhhmmss instead of the required date format yyyy-mm-dd hh:mm:ss.
Can I specify 3 new partition column based on just single data value? Something like the example below (which doesn't work)
create external table cdrs (
record_id int,
record_detail tinyint,
datetime_start int
)
partitioned by (record_type int, createyear=datetime_start(0,3) int, createmonth=datetime_start(4,5) int, createday=datetime_start(6,7) int)
row format delimited
fields terminated by '|'
lines terminated by '\n'
stored as TEXTFILE
location 'hdfs://nameservice1/tmp/sbx_unleashed.db'
tblproperties ("skip.header.line.count"="1", "skip.footer.line.count"="1");

Answer 1

If you want to be able to use MSCK REPAIR TABLE to add the partition for you based on the directories structure you should use the following convention:
The nesting of the directories should match the order of the partition columns.
A directory name should be {partition column name}={value}
If you intends to add the partitions manually then the structure has no meaning.
Any set values can be coupled with any directory. e.g. -
alter table cdrs
add if not exist partition (record_type='TYP123',createdate=date '2017-03-22')
location 'hdfs://nameservice1/tmp/sbx_unleashed.db/2017MAR22_OF_TYPE_123';
Assuming directory structure -
.../sbx_unleashed.db/record_type=.../createyear=.../createmonth=.../createday=.../
e.g.
.../sbx_unleashed.db/record_type=TYP123/createyear=2017/createmonth=03/createday=22/
create external table cdrs
(
record_id int
,record_detail tinyint
,datetime_start int
)
partitioned by (record_type int,createyear int, createmonth tinyint, createday tinyint)
row format delimited
fields terminated by '|'
lines terminated by '\n'
stored as TEXTFILE
location 'hdfs://nameservice1/tmp/sbx_unleashed.db'
tblproperties ("skip.header.line.count"="1", "skip.footer.line.count"="1")
;
Assuming directory structure -
.../sbx_unleashed.db/record_type=.../createdate=.../
e.g.
.../sbx_unleashed.db/record_type=TYP123/createdate=2017-03-22/
create external table cdrs
(
record_id int
,record_detail tinyint
,datetime_start int
)
partitioned by (record_type int,createdate date)
row format delimited
fields terminated by '|'
lines terminated by '\n'
stored as TEXTFILE
location 'hdfs://nameservice1/tmp/sbx_unleashed.db'
tblproperties ("skip.header.line.count"="1", "skip.footer.line.count"="1")
;