从字符串sql netezza中提取字符串

请给我一个包含字符串的列，如下所示

Plan
{"en_US":"Ultra 2 Speed Up to 100Mbps Prepaid FTTH(140GB)","ar_EG":"Ultra 2 Speed Up to 100Mbps Prepaid FTTH(140GB)"}
{"en_US":"Ultra 2 Speed Up to 100Mbps Prepaid FTTH(600GB)","ar_EG":"Ultra 2 Speed Up to 100Mbps Prepaid FTTH(600GB)"}
{"en_US":"Super 3 speed Up to 30Mbps Prepaid FTTH(250GB)","ar_EG":"Super 3 speed Up to 30Mbps Prepaid FTTH(250GB)"}
{"en_US":"Ultra 2 Speed Up to 100Mbps Prepaid FTTH(250GB)","ar_EG":"Ultra 2 Speed Up to 100Mbps Prepaid FTTH(250GB)"}

我需要将字符串提取到3个字段中

第一个如下图所示

Rate_Plan
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(140GB)
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(600GB)
Super 3 speed Up to 30Mbps Prepaid FTTH(250GB)
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(250GB)

Quota
140
600
250
250

Speed
100
100
30
100

第二个如下图所示

Rate_Plan
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(140GB)
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(600GB)
Super 3 speed Up to 30Mbps Prepaid FTTH(250GB)
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(250GB)

Quota
140
600
250
250

Speed
100
100
30
100

3ed字段如下所示

Rate_Plan
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(140GB)
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(600GB)
Super 3 speed Up to 30Mbps Prepaid FTTH(250GB)
Ultra 2 Speed Up to 100Mbps Prepaid FTTH(250GB)

Quota
140
600
250
250

Speed
100
100
30
100

---

阅读regexp_extract（）函数：

在您的情况下，请从以下内容开始： “^（[^:]）：（[^:]）：.$”并提取第二个模式 然后使用类似的方法从该字符串中提取另外两个字符串： ‘^. 至（[0-9]）+Mbps’（模式1）

---

我希望您能理解。

在命令使用拆分之前，我需要从左边提取字符串？