Sql , 将（*）算作电影， 计数（当s.Veiculo_Modelo“”时为1结束）为成功 从…起 积分器 哪里 m、 Ocr_DataHora>=“2012-09-17 00:00:00.000” 和m.Ocr_DataHora '' THEN 1 END) AS Sucesso FROM Integracao m WHERE m.Ocr_DataHora >= '2012-09-17 00:00:00.000' AND m.Ocr_DataHora < '2012-09-18 00:00:00.000' GROUP BY DATEPART(HOUR, m.Ocr_DataHora), (DATEPART(MINUTE, m.Ocr_DataHora) % 6) ORDER BY DATEPART(HOUR, m.Ocr_DataHora), (DATEPART(MINUTE, m.Ocr_DataHora) % 6)

如您所见，查询不会过滤

s.Veiculo\u Modelo'

上的行。但是，在计算

Sucesso

列的行数时使用该条件。第二个

COUNT

的参数是大小写表达式。如果满足指定的条件，则返回一个值（任意选择为

1

，但实际上可以是任何值），否则返回

NULL

。由于

COUNT

忽略空值，因此结果将与专用查询计算并返回

successo

的结果相同，正如其他人已经告诉您的那样，您可以将这两个查询用作派生表（subselect），并使用每个查询的

Hora

列将它们连接起来。在查询中是否计算列并不重要，在联接条件中使用它是完全合法的

但是，我认为通过在一个查询中计算两个计数（即不使用子查询），可以更有效地获得相同的结果。以下是如何做到这一点：

SELECT  
    (
        CAST(DATEPART(HOUR, m.Ocr_DataHora) AS NVARCHAR) +
        ':' +
        CAST((DATEPART(MINUTE, m.Ocr_DataHora) % 6) AS NVARCHAR) +
        '0'         
    )                                                  AS Hora,
    COUNT(*)                                           AS Movimentações,
    COUNT(CASE WHEN s.Veiculo_Modelo <> '' THEN 1 END) AS Sucesso
FROM
    Integracao m
WHERE
        m.Ocr_DataHora      >=  '2012-09-17 00:00:00.000'
    AND m.Ocr_DataHora      <   '2012-09-18 00:00:00.000'
GROUP BY        
    DATEPART(HOUR, m.Ocr_DataHora),
    (DATEPART(MINUTE, m.Ocr_DataHora) % 6)
ORDER BY    
    DATEPART(HOUR, m.Ocr_DataHora),
    (DATEPART(MINUTE, m.Ocr_DataHora) % 6)

选择
(
演员阵容（DATEPART（小时，m.Ocr_DataHora）为NVARCHAR）+
':' +
铸造（（日期部分（分钟，m.Ocr_DataHora）%6）为NVARCHAR）+
'0'         
)作为霍拉，
将（*）算作电影，
计数（当s.Veiculo_Modelo“”时为1结束）为成功
从…起
积分器
哪里
m、 Ocr_DataHora>=“2012-09-17 00:00:00.000”
和m.Ocr_DataHora<'2012-09-18 00:00:00.000'
分组
日期部分（小时，m.Ocr_DataHora），
（日期部分（分钟，m.Ocr_DataHora）%6）
订购人
日期部分（小时，m.Ocr_DataHora），
（日期部分（分钟，m.Ocr_DataHora）%6）

---

如您所见，查询不会过滤

s.Veiculo\u Modelo'

上的行。但是，在计算

Sucesso

列的行数时使用该条件。第二个

COUNT

的参数是大小写表达式。如果满足指定的条件，则返回一个值（任意选择为

1

，但实际上可以是任何值），否则返回

NULL

。由于

COUNT

忽略空值，因此结果将与专用查询相同，计算并返回

successo

我真的从来没有想过我可以在COUNT中执行case语句！：O即使在文档中也没有提及！！我真的从来没有想过我能做一个计数的案例陈述O即使在文档中也没有提及！！

SELECT  
    (
        CAST(DATEPART(HOUR, s.Ocr_DataHora) AS NVARCHAR) +
        ':' +
        CAST((DATEPART(MINUTE, s.Ocr_DataHora) % 6) AS NVARCHAR) +
        '0'         
    )                                       AS Hora,
    COUNT(*)                                AS Sucesso
FROM
    Integracao s
WHERE
        s.Veiculo_Modelo    <>  ''
    AND s.Ocr_DataHora      >=  '2012-09-17 00:00:00.000'
    AND s.Ocr_DataHora      <   '2012-09-18 00:00:00.000'
GROUP BY        
    DATEPART(HOUR, s.Ocr_DataHora),
    (DATEPART(MINUTE, s.Ocr_DataHora) % 6)

Hora | Movimentações | Sucesso

WITH 
firstQuery(Hora, Movimentações) AS (<first query definition with out ORDER BY >),
secondQuery(Hora, Sucesso) AS (<second query definition with out ORDER BY >)
SELECT
     f.Hora, f.Movimentações , s.Sucesso
FROM 
    firstQuery f
    JOIN secondQuery s
    ON f.Hora = s.Hora

Select A.Hora,A.Movimentações,B.Sucesso
From (*First Query*) as A
inner join (*Second Query*) as B on A.Hora = B.Hora

Select A.Hora,A.Movimentações,B.Sucesso
From (SELECT  
    (
        CAST(DATEPART(HOUR, m.Ocr_DataHora) AS NVARCHAR) +
        ':' +
        CAST((DATEPART(MINUTE, m.Ocr_DataHora) % 6) AS NVARCHAR) +
        '0'         
    )                                       AS Hora,
    COUNT(*)                                AS Movimentações
FROM
    Integracao m
WHERE
        m.Ocr_DataHora      >=  '2012-09-17 00:00:00.000'
    AND m.Ocr_DataHora      <   '2012-09-18 00:00:00.000'
GROUP BY        
    DATEPART(HOUR, m.Ocr_DataHora),
    (DATEPART(MINUTE, m.Ocr_DataHora) % 6)
ORDER BY    
    DATEPART(HOUR, m.Ocr_DataHora),
    (DATEPART(MINUTE, m.Ocr_DataHora) % 6)) As A
inner join (SELECT  
    (
        CAST(DATEPART(HOUR, s.Ocr_DataHora) AS NVARCHAR) +
        ':' +
        CAST((DATEPART(MINUTE, s.Ocr_DataHora) % 6) AS NVARCHAR) +
        '0'         
    )                                       AS Hora,
    COUNT(*)                                AS Sucesso
FROM
    Integracao s
WHERE
        s.Veiculo_Modelo    <>  ''
    AND s.Ocr_DataHora      >=  '2012-09-17 00:00:00.000'
    AND s.Ocr_DataHora      <   '2012-09-18 00:00:00.000'
GROUP BY        
    DATEPART(HOUR, s.Ocr_DataHora),
    (DATEPART(MINUTE, s.Ocr_DataHora) % 6)) As B on B.Hora = A.Hora

SELECT  
    (
        CAST(DATEPART(HOUR, m.Ocr_DataHora) AS NVARCHAR) +
        ':' +
        CAST((DATEPART(MINUTE, m.Ocr_DataHora) % 6) AS NVARCHAR) +
        '0'         
    )                                                  AS Hora,
    COUNT(*)                                           AS Movimentações,
    COUNT(CASE WHEN s.Veiculo_Modelo <> '' THEN 1 END) AS Sucesso
FROM
    Integracao m
WHERE
        m.Ocr_DataHora      >=  '2012-09-17 00:00:00.000'
    AND m.Ocr_DataHora      <   '2012-09-18 00:00:00.000'
GROUP BY        
    DATEPART(HOUR, m.Ocr_DataHora),
    (DATEPART(MINUTE, m.Ocr_DataHora) % 6)
ORDER BY    
    DATEPART(HOUR, m.Ocr_DataHora),
    (DATEPART(MINUTE, m.Ocr_DataHora) % 6)