SQL how to count reocrds from date - sql

Question

I would like it to create a NUMBER column where the records for each date will be counted. So, for example, how many NRBs are there in 2021-10. However, when I choose count it gets such a result, sum cannot be because these are not numbers but an identification number
Here is my result:
Here my code:
PROC SQL; <- FIRST QUERY
create table PolisyEnd as
select distinct
datepart(t1.data_danych) as DATA_DANYCH format yymmdd10.
,(t4.spr_NRB) as NRB
,datepart(t1.PRP_END_DATE) as PRP_END_DATE format yymmdd10.
,datepart(t1.PRP_END_DATE) as POLICY_VINTAGE format yymmd7.,
case
when datepart(t1.PRP_END_DATE) IS NOT NULL and datepart(t1.PRP_END_DATE) - &gv_date_dly. < 0 THEN 'WYGASLA'
when datepart(t1.PRP_END_DATE) IS NOT NULL and datepart(t1.PRP_END_DATE) - &gv_date_dly. >= 0 and datepart(t1.PRP_END_DATE) - &gv_date_dly. <=7 THEN 'UWAGA'
when datepart(t1.PRP_END_DATE) IS NOT NULL and datepart(t1.PRP_END_DATE) - &gv_date_dly. >= 30 THEN 'AKTYWNA'
when datepart(t1.PRP_END_DATE) IS NULL THEN 'BRAK INFORMACJI O POLISIE'
end as POLISA_INFORMACJA
from
cmz.WMDTZDP_BH t1
left join
(select distinct kontr_id,obj_oid from cmz.BH_D_ZAB_X_ALOK_&thismonth) t2
on t2.obj_oid = t1.obj_oid
left join
(select distinct data_danych, kontr_id, kre_nrb from dm.BH_WMDTKRE_&thismonth) t3
on t3.kontr_id = t2.kontr_id
left join
(select distinct spr_NRB, spr_STATUS from _mart.mart_kred) t4
on t4.spr_NRB = t3.kre_nrb
where datepart(t1.data_danych) between '5Aug2019'd and &gv_date_dly. and t1.Actual = "T"
and t4.spr_STATUS ="A"
; SECOND CAME FROM FIRST
create table PolisyEnd1 as
select distinct
DATE_
,(POLICY_VINTAGE)
,count(NRB) as NUMBER
,POLISA_INFORMACJA
from PolisyEnd
where INFORMATION ="U"
;
Quit;
EDIT 1 :
I got the result, but how to do so that for 2021-11 there is one result and summed up all records for this period

Answer 1

Rather than using a distinct here what you really want is a GROUP BY.
PROC SQL;
create table PolisyEnd1 as
select
DATE_
,(POLICY_VINTAGE)
,count(NRB) as NUMBER
,POLISA_INFORMACJA
from PolisyEnd
where INFORMATION ="U"
group by DATE_, (POLICY_VINTAGE), POLISA_INFORMACJA
;
Quit;

Answer 2

You can use group by
If you want to count just based on the DATE_ column here is an example
select DATE_, count(NRB) as NUMBER
from PolisyEnd
where INFORMATION ="U"
group by DATE_
Otherwise, you can add other columns also in the group by and select clause.
For Edit1:
For each month you can use this:
select POLICY_VINTAGE, SUM(NUMBER) as NUMBER
from Your_Table
group by POLICY_VINTAGE