如何轉MySQL表的唯一行成列的查詢

我有以下MySQL表：

Timestamp   | MachineID | Arrival_Timestamp | CobID | Data | 
--------------------+-----------+---------------------+-------+------| 
2017-07-22 20:03:07 | 1217 | 2017-08-08 04:46:02 | C237 | 10 | 
2017-07-22 20:03:08 | 1217 | 2017-08-08 04:47:03 | C237 | 11 | 
2017-07-22 20:03:09 | 1217 | 2017-08-08 04:48:04 | C237 | 12 | 
2017-07-22 20:07:17 | 1218 | 2017-08-08 04:49:05 | C234 | 20 | 
2017-07-22 20:05:19 | 1224 | 2017-08-08 04:50:06 | C239 | 30 | 
2017-07-22 20:06:17 | 1216 | 2017-08-08 04:50:07 | C237 | 40 | 
2017-07-22 20:08:07 | 1224 | 2017-08-08 04:50:08 | C234 | 50 | 
2017-07-22 20:09:14 | 1216 | 2017-08-08 04:55:09 | C239 | 60 | 
2017-07-22 20:09:14 | 1216 | 2017-08-08 04:55:10 | C239 | 61 | 
2017-07-22 20:09:17 | 1216 | 2017-08-08 04:55:12 | C239 | 63 | 
2017-07-22 20:09:18 | 1216 | 2017-08-08 04:56:02 | C239 | 63 | 
2017-07-22 20:09:19 | 1216 | 2017-08-08 04:56:03 | C239 | 63 | 
2017-07-22 20:09:34 | 1217 | 2017-08-08 04:56:21 | C234 | 70 | 
2017-07-22 20:09:56 | 1224 | 2017-08-08 04:57:23 | C237 | 80 | 
2017-07-22 20:09:58 | 1299 | 2017-08-08 04:57:43 | C239 | 90 | 
2017-07-22 20:09:59 | 1218 | 2017-08-08 04:57:55 | C239 | 100 | 
2017-07-22 20:10:04 | 1218 | 2017-08-08 04:58:03 | C234 | 110 | 
2017-07-22 20:10:17 | 1217 | 2017-08-08 04:58:04 | C239 | 120 |

從這個表，我想指望所有條目/所有獨特的MachineID s的所有獨特的CobID行。

目標：

我想寫一個查詢，其中輸出將是：

 | 1216 | 1217 | 1218 | 1224 | 1299 | 
-----+------+------+------+------+------| 
C234 | 0 | 1 | 1 | 2 | 0 | 
C237 | 1 | 3 | 0 | 1 | 0 | 
C239 | 5 | 1 | 1 | 1 | 1 |

所以這個查詢，我可以看看MachineID1216說有0條目C234而C239有5條目。

我迄今所做的：

我曾嘗試下面的查詢，這讓我我想要的東西，而不是在正確的格式我想：

data_query = "SELECT `MachineID`, `CobID`, COUNT(*) FROM `my_table` WHERE `Arrival_Timestamp` between \'{}\' AND \'{}\' GROUP BY `CobID`, `MachineID` ORDER BY `CobID` ASC".format(
     start_date, end_date)

問題：

如何更改查詢以使其達到上述格式？

來源

2017-08-08 3kstc

嘗試使用的情況下，你只SUM 1，如果它是在correc列，如果你有更多的機器類型，你可以添加更多的列：

data_query="SELECT CobID, 
     SUM(case 
     when MachineID='1216' then 1 
     else 0 
     end) as '1216', 
     SUM(case 
     when MachineID='1217' then 1 
     else 0 
     end) as '1217', 
     SUM(case 
     when MachineID='1218' then 1 
     else 0 
     end) as '1218', 
     SUM(case 
     when MachineID='1224' then 1 
     else 0 
     end) as '1224', 
     SUM(case 
     when MachineID='1299' then 1 
     else 0 
     end) as '1299' 
FROM my_table 
WHERE `Arrival_Timestamp` between \'{}\' AND \'{}\' 
group by CobID 
ORDER BY `CobID` ASC".format(start_date, end_date)

來源

2017-08-08 06:30:21 nacho

如何轉MySQL表的唯一行成列的查詢

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