英文:
How to extract number from a string in SnowFlake
问题
我有一个字符串需要提取卡号，
用户通过门进入，他的卡号为(123456)其他文本
由于只有一个括号，我能够提取卡号。我使用的解决方案是
> 选择"用户通过门进入，他的卡号为(123456)。"
> 作为card_number_text，substring(card_number_text，POSITION('('，
> card_number_text)+1，POSITION(')'，card_number_text) - POSITION('('，
> card_number_text) - 1)
这样可以正确提取卡号。但我面临的问题是当文本中有两个括号时，
例如，这样的文本不会提供正确的卡号
用户通过门进入(使用反通行)并且他的卡号为(123456)其他文本
英文:
I have a string like this to extract the card number,
A user entered through a door and his Card number (123456) other text
Since there is only one parenthesis,I am able to extract the card number. The solution for this I am using is
> Select "An user entered through a door and his Card number (123456)."
> as card_number_text, substring(card_number_text, POSITION('(',
> card_number_text)+1, POSITION(')', card_number_text) - POSITION('(',
> card_number_text) - 1)
This gives the card number properly. But the problem I facing is when there are two parentheses in the text,
For example, a text like this won't give a proper card number
A user entered through a door (using an anti-pass) and his Card number (123456) other text
答案1
得分: 1
为什么不根据字符串“Card number（”拆分数据，然后在进行一些清理后选择第二部分作为卡号。
select
replace( -- 这会去除额外字符并返回123456
split_part(data_col,'Card number (',2) -- 这会得到123456)。
,').') as card_number
无论卡号是数字还是字母数字都无关紧要。
英文:
Why not splitting the data based on string Card number (. And then pick up second part as card number after little cleanup.
select
replace( -- this removes extra character and returns 123456
split_part(data_col,'Card number (',2) -- this results 123456).
,').') as card_number
It doesnt matter if card number is a numeric or alphanumeric.
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