MySQL - 如何提取分隔符之间的所有值

Question

我有一个调度程序应用程序创建的表，其中包含两列，ID和WEEK形式为["1","2","5","10","20","52"]。
我想提取并标准化ID和WEEK列以绘制时间表。不幸的是，我甚至不知道从哪里开始。

Answer 1

SELECT * FROM ints; 
+---+ 
| i | 
+---+ 
| 0 | 
| 1 | 
| 2 | 
| 3 | 
| 4 | 
| 5 | 
| 6 | 
| 7 | 
| 8 | 
| 9 | 
+---+ 


SELECT DISTINCT SUBSTRING_INDEX (SUBSTRING_INDEX('1,2,5,10,20,52',',',i+1),',',-1)+0 x FROM ints; 
+----+ 
| x | 
+----+ 
| 1 | 
| 2 | 
| 5 | 
| 10 | 
| 20 | 
| 52 | 
+----+