问题
I am trying to extract data from a column which has multiple characters and I am only interested in getting the specific string from the input string. My sample input and outputs are as below. How can I implement this using regexp_extract function.Can someone share their thoughts on this if you have worked on GBQ.Thanks.
**
- SQL:-
**
SELECT request.url AS url
FROM [xyz.abc]
WHERE regexp_extract(input,r'he=(.{32})')
**
- Input:-
**
http://mpp.xyz.com/conv/v=5;m=1;t=16901;ts=20150516234355;he=5e3152eafc50ed0346df7f10095d07c4;catname=Horoscope
2 http://mpp.xyz.com/conv/v=5;m=1;t=16901;ts=20150516234335;he=5e3152eafc50ed0346df7f10095d07c4;catname=High+Speed+Internet
**
- Output :-
** **
5e3152eafc50ed0346df7f10095d07c4
5e3152eafc50ed0346df7f10095d07c4
**
回答1:
It's very simple to do:
select regexp_extract(input,r'he=(.{32})');
or as example:
select regexp_extract('http://mpp.xyz.com/conv/v=5;m=1;t=16901;ts=20150516234355;he=5e3152eafc50ed0346df7f10095d07c4;catname=Horoscope',r'he=(.{32})')
来源：https://stackoverflow.com/questions/30333484/extracting-data-using-regexp-extract-in-google-bigquery