即使使用DISTINCT，也会重复行

Question

我从这个查询中获得了重复的行，请感谢您的帮助。

select

Id_num
Street
Town
Incidents
IncidentType A
IncidentType B
IncidentType C

FROM OPENQUERY
(POSTGRESQL, 
Id_num
Street
Town
Incidents
IncidentType A
IncidentType B
IncidentType C

FROM
(

select

COUNT(i.Id_num) as Incidents,

COUNT(case when i.INC_TYPE = ''A'' THEN 1
  end)
"IncidentType A"
COUNT(case when i.INC_TYPE = ''B'' THEN 1
  end)
"IncidentType B"
COUNT(case when i.INC_TYPE = ''C'' THEN 1
  end)
"IncidentType C"

FROM Table i

WHERE I.CALL_TIME  >= (now()-(''12 months'' ::interval))

GROUP BY i.Id_num

HAVING COUNT (i.Id_num) > 1

) i

结果是返回一些重复

Id_num    Street   Incidents   IncidentType A IncidentType B IncidentType C
  32    back lane     5             3              0               2
  32    back lane     5             3              0               2

我已尝试SELECT DISTINCT ON Id_num，但仍然会重复。