MySQL - 使用LOOP通过冒号将行拆分为列

Question

我正在尝试拆分以下字符串 -

Reference 1 Drug Name: Lisdexamphetamine, Strength: 30mg, Form: capsule, Quantity: 21 Drug Name: Lisdexamphetamine, Strength: 50mg, Form: capsule, Quantity: 21 Drug Name: Fentanyl, Strength: 100mcg, Form: patches, Quantity: 5 Drug Name: Durogesic , Strength: 25mcg, Form: patches, Quantity: 5 Drug Name: Durogesic, Strength: 75mcg, Form: patches, Quantity: 10 Drug Name: Durogesic,  Strength: 100mcg, Form: patches, Quantity: 15 Drug Name: Oxycodone, Strength: 20mg, Form: tablet, Quantity: 84

单个列，例如参考|药物名称|力量|形式|量

正如您所看到的，每个名字后面都有一个冒号。

这是我到目前为止所尝试的：

SELECT reference, email, SUBSTRING_INDEX(SUBSTRING_INDEX(drugs,',',1),':',-1) AS Drug, 
SUBSTRING_INDEX(SUBSTRING_INDEX(drugs,',',2),':',-1) AS Strength,
SUBSTRING_INDEX(SUBSTRING_INDEX(drugs,',',3),':',-1) AS Form
,
SUBSTRING_INDEX(SUBSTRING_INDEX(drugs,',',5),':',-1) AS Quantity
FROM CD2015_destructions

但每个参考编号只返回1行，而可能有多个

当前声明给我：

Reference | Drug Name | Strength | form    | Quantity
1         |Paracetamol|20MG      | Tablet  | 5
2         |Methadone  | 15MG     | Liquid  | 10
3         |Pethadine  | 15MG     | Liquid  | 12

等。

但如果我的参考号码有多种药物，它就不会显示下一行

Reference | Drug Name  | Strength | form    | Quantity
1         |Paracetamol | 20MG     | Tablet  | 5
1         |Oxyconton   | 15MG     | Liquid  | 10
1         |Methadone   | 25MG     | capsule | 10