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

From Michael Nolan
Subject Re: Removing Last field from CSV string
Date
Msg-id CAOzAqu+7uFb96+b7SJ_Hf_NfhR7u-q2i_bXNwVgwH3c288adWg@mail.gmail.com
Whole thread Raw
In response to Removing Last field from CSV string  (Alex Magnum <magnum11200@gmail.com>)
List pgsql-general


On Sat, May 16, 2020 at 10:19 AM 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.

You should be able to write a posix patter that does this, you want to keep everything except a comma followed by 0 or more non-commas and the end of the string boundary to make sure it gets just the last such match.
--
Mike Nolan

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