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Re: Removing Last field from CSV string - Mailing list pgsql-general

From Samuel Roseman
Subject Re: Removing Last field from CSV string
Date
Msg-id 759976875.1953487.1589952069934@mail.yahoo.com
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In response to Removing Last field from CSV string  (Alex Magnum <magnum11200@gmail.com>)
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Regular expressions, in my opinion, can be a very powerful text search and replace engine if you know how to use it.
Feel free to enhance what I provided below; it seems to work for the example you provided.

postgres=# select regexp_replace(substring('Class V,Class VI,Class VII,Competitive Exam,Class VIII,Class X,Class XI,Class IX,Class XII',1,60),'(.*),\w+','\1');
                     regexp_replace                     
--------------------------------------------------------
 Class V,Class VI,Class VII,Competitive Exam,Class VIII
(1 row)




Regards,

PflugerGeek

On Saturday, May 16, 2020, 10:19:28 AM CDT, Alex Magnum <magnum11200@gmail.com> wrote:


Hi,

I have a string that I want to cut to 60 char and then remove the last field and comma.

substring('Class V,Class VI,Class VII,Competitive Exam,Class VIII,Class X,Class XI,Class IX,Class XII',1,60);

substring | Class V,Class VI,Class VII,Competitive Exam,Class VIII,Class

Now I try to remove the last  field and comma  ",Class"

To get  Class V,Class VI,Class VII,Competitive Exam,Class VIII

Is there a function or easy way to do this?
Any help would be appreciated.

Thank you
Alex

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