SELECT m.disease_id,COUNT(*)
FROM diseaseclass4 as d , medical_record as m
where d.Disease_ID = m.disease_id
GROUP BY 1
你这个好像CLIC的理赔数据库哦,怎么不在ORACLE里面查询呢~没很明白你的意思,你看下面的语句结果是不是你要的:
SELECT m.disease_id,COUNT(*)
FROM diseaseclass4 as d , medical_record as m
where d.Disease_ID = m.disease_id
GROUP BY 1
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