concat(LPAD(day(PLAN_REPAYMENT_DATE_KEY), 2, '0'), '.', LPAD(MONTH(PLAN_REPAYMENT_DATE_KEY), 2, '0'))

编辑：也在当天添加了lpad。

1. date_format(PLAN_REPAYMENT_DATE_KEY,'dd.MM') 
2. from_unixtime(unix_timestamp(PLAN_REPAYMENT_DATE_KEY),'dd.MM')
3. printf('%02d.%02d',day(PLAN_REPAYMENT_DATE_KEY),month(PLAN_REPAYMENT_DATE_KEY))

hive> with t as (select date '2017-02-05' as PLAN_REPAYMENT_DATE_KEY)
    > select date_format(PLAN_REPAYMENT_DATE_KEY,'dd.MM') from t;
OK
05.02

hive> with t as (select date '2017-02-05' as PLAN_REPAYMENT_DATE_KEY) 
    > select from_unixtime(unix_timestamp(PLAN_REPAYMENT_DATE_KEY),'dd.MM') from t;
OK
05.02

hive> with t as (select date '2017-02-05' as PLAN_REPAYMENT_DATE_KEY)
    > select printf('%02d.%02d',day(PLAN_REPAYMENT_DATE_KEY),month(PLAN_REPAYMENT_DATE_KEY)) from t;
OK
05.02