結合兩種查詢沒有某些功能

Question

的使用我有兩個單獨的查詢：

SELECT TIME_TO_SEC(SUM(odchodDoch - prichodDoch)) AS cisloDoch, 
    SUM(prestavkaDoch) as presDoch, 
    operatorDoch 
    FROM dochazkaVyroba 
    WHERE operatorDoch IN ("x","y","z") 
    AND datumDoch BETWEEN "2017-06-01" AND "2017-06-02" 
    GROUP BY operatorDoch; 

SELECT SUM(CAS) as cisloVyk, 
    JMENO 
    FROM produkce 
    WHERE JMENO IN ("x","y","z") 
    AND DATUM BETWEEN "2017-06-01" AND "2017-06-02" 
    GROUP BY JMENO; 

而且我希望這些合併成一個單一的查詢。

，並分別得到以下結果：

cisloDoch presDoch operatorDoch 
57600  60   x 
    0   0   y 
57600  0   z 


cisloVyk JMENO 
532  x 
    0  y 
780  z 

我所希望做的是上面的查詢合併成一個，基於：

produkce.JMENO = dochazkaVyroba.operatorDoch，

讓我得到以下：

cisloDoch presDoch operatorDoch cisloVyk JMENO 
57600  60   x    532 x 
    0   0   y    0 y 
57600  0   z    780 z 

不幸的是ely，FULL OUTER JOIN在MySQL中不可用。

我也不能使用UNION與ON produkce.JMENO = dochazkaVyroba.operatorDoch。

Answer 1

蠻力的方法是剛剛加入的兩個子查詢：

SELECT 
    t1.cisloDoch, 
    t1.presDoch, 
    t1.operatorDoch, 
    t2.cisloVyk, 
    t2.JMENO 
FROM 
(
    SELECT 
     TIME_TO_SEC(SUM(odchodDoch - prichodDoch)) AS cisloDoch, 
     SUM(prestavkaDoch) AS presDoch, 
     operatorDoch 
    FROM dochazkaVyroba 
    WHERE operatorDoch IN ("x","y","z") AND 
      datumDoch BETWEEN "2017-06-01" AND "2017-06-02" 
    GROUP BY operatorDoch 
) t1 
INNER JOIN 
(
    SELECT SUM(CAS) as cisloVyk, JMENO 
    FROM produkce 
    WHERE JMENO IN ("x","y","z") AND 
      DATUM BETWEEN "2017-06-01" AND "2017-06-02" 
    GROUP BY JMENO 
) t2 
    ON t1.operatorDoch = t2.JMENO 

Answer 2

您可以使用union all和group by：

SELECT MAX(cisloDoch) as cisloDoch, 
     MAX(presDoch) as presDoch, 
     MAX(operatorDoch) as operatorDoch, 
     MAX(cisloVyk) as cisloVyk, 
     MAX(JMENO) as JMENO 
FROM ((SELECT TIME_TO_SEC(SUM(odchodDoch - prichodDoch)) AS cisloDoch, 
       SUM(prestavkaDoch) as presDoch, operatorDoch, 
       NULL as cisloVyk, NULL as JMENO 
     FROM dochazkaVyroba 
     WHERE operatorDoch IN ('x', 'y', 'z') AND 
      datumDoch BETWEEN '2017-06-01' AND '2017-06-02' 
     GROUP BY operatorDoch 
    ) UNION ALL 
     (SELECT NULL NULL, NULL, SUM(CAS) as cisloVyk, JMENO 
     FROM produkce 
     WHERE JMENO IN ('x', 'y', 'z') AND 
      datum BETWEEN '2017-06-01' AND '2017-06-02' 
     GROUP BY JMENO 
    ) 
    ) op 
GROUP BY COALESCE(operatorDoch, JMENO);