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我有这个疑问MySQL如何从表中进行SELECT SUM和从其他SEARCH中进行乘法?
SELECT ps_ur AS UR, COUNT(ps_ur) AS Value
FROM patient_services
GROUP BY UR
UNION ALL
SELECT eng_ur AS UR, COUNT(eng_ur) AS Value
FROM engagements
WHERE LENGTH(eng_ur)>0
GROUP BY UR
结果:
UR Value
002035 3
002400 2
005441 4
...
现在我需要从患者表男/女来计算和数值乘以
喜欢这一点,但右侧
SELECT
SUM(CASE WHEN patient_gender = 'Male' THEN 1 ELSE 0 END) Male,
SUM(CASE WHEN patient_gender = 'Female' THEN 1 ELSE 0 END) Female
FROM patients WHERE patient_ur
如何做到这一点?
您的试验出了什么问题?你想要得到什么? – Rahul
@Rahul我不知道如何搜索** patient_ur **从第一个查询** UR **和乘以**值**和所有在一个查询 – user3315525
@Rahul我试过这个'SELECT SUM( CASE当patient_gender ='男'然后1 ELSE 0结束)男性,SUM(案例时间patient_gender ='女性'然后1 ELSE 0结束)女病人来自患者WHERE patient_ur调用foreach( SELECT ps_ur AS UR来自patient_services联盟所有选择eng_ur从约定AS UR WHERE LENGTH(eng_ur)> 0 )'但这只给我带来独特的结果,我需要每个 – user3315525