mysql查询输出行到列

Question

我有以下查询，工作100％。

SELECT 
transporttype, 
concat(MONTHNAME(STR_TO_DATE(month, '%m')), ' ', year) AS `month`, 
round(sum(cost),0) AS cost 
FROM v2ReportingTable 
WHERE (transporttype not in ('Extrusions-LongDistance','Extrusions-Shuttle') and urgent='no') 
GROUP BY (concat(MONTHNAME(STR_TO_DATE(month, '%m')),' ',year)),transporttype 
ORDER BY (concat(MONTHNAME(STR_TO_DATE(month, '%m')),' ',year)), transporttype 

此输出在低于1列的结果：

如何操作查询，以便输出为列，所以我可以绘制它。所需的输出是这样的：

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更新到可能的答案，从奥斯卡·佩雷斯

Answer 1

根据@JW，感谢您的协助。

SELECT `month`, 
     MAX(CASE WHEN transporttype = 'Inbound' THEN loads ELSE NULL END) `Inbound`, 
     MAX(CASE WHEN transporttype = 'LocalGauteng' THEN loads ELSE NULL END) `LocalGauteng`, 
     MAX(CASE WHEN transporttype = 'LongDistance' THEN loads ELSE NULL END) `LongDistance`, 
     MAX(CASE WHEN transporttype = 'Shuttle-company1' THEN loads ELSE NULL END) `Shuttle-company1`, 
     MAX(CASE WHEN transporttype = 'Shuttle-company2' THEN loads ELSE NULL END) `Shuttle-company2`, 
     MAX(CASE WHEN transporttype = 'stores' THEN loads ELSE NULL END) `stores`, 
     MAX(CASE WHEN transporttype = 'returns' THEN loads ELSE NULL END) `returns`, 
     MAX(CASE WHEN transporttype = 'localkzn' THEN loads ELSE NULL END) `localkzn` 
FROM 
    (
     SELECT transporttype, 
       CONCAT(MONTHNAME(STR_TO_DATE(month, '%m')), ' ', year) AS `month`, 
       COUNT(loadnumber) AS loads 
     FROM v2ReportingTable 
     WHERE transporttype not in ('Extrusions-LongDistance','Extrusions-Shuttle') AND 
       urgent='no' 
     GROUP BY (concat(MONTHNAME(STR_TO_DATE(month, '%m')),' ',year)), transporttype 
    ) aa 
GROUP BY `month` 

Answer 2

匹配你可以使用LEFT JOIN操作。例如：

SELECT s0.month, 
     s1.cost as Inbound, 
     s2.cost as LocalPMB, 
     s3.cost as Shuttle,  
     s4.cost as LongDistance 
    FROM (
     SELECT 1 as month 
      UNION 
     SELECT 2 as month 
      UNION 
     SELECT 3 as month 
      UNION 
     SELECT 4 as month 
      UNION 
     SELECT 5 as month 
      UNION 
     SELECT 6 as month 
      UNION 
     SELECT 7 as month 
      UNION 
     SELECT 8 as month 
      UNION 
     SELECT 9 as month 
      UNION 
     SELECT 10 as month 
      UNION 
     SELECT 11 as month 
      UNION 
     SELECT 12 as month 
     ) as s0 
LEFT JOIN 
     (
     SELECT month, 
       round(sum(cost),0) AS cost 
      FROM v2ReportingTable 
      WHERE urgent='no' 
      AND transporttype='Inbound' 
     GROUP BY month 
     ) as s1 on s0.month=s1.month 
LEFT JOIN 
     (
     SELECT month, 
       round(sum(cost),0) AS cost 
      FROM v2ReportingTable 
      WHERE urgent='no' 
      AND transporttype='LocalPMB' 
     GROUP BY month 
     ) as s2 on s0.month=s2.month 
LEFT JOIN 
     (
     SELECT month, 
       round(sum(cost),0) AS cost 
      FROM v2ReportingTable 
      WHERE urgent='no' 
      AND transporttype='Shuttle' 
     GROUP BY month 
     ) as s3 on s0.month=s3.month 
LEFT JOIN 
     (
     SELECT month, 
       round(sum(cost),0) AS cost 
      FROM v2ReportingTable 
      WHERE urgent='no' 
      AND transporttype='Long Distance' 
     GROUP BY month 
     ) as s4 on s0.month=s4.month 
ORDER BY month