Groups > comp.databases.postgresql > #817

Re: Update Json column

From	Laurenz Albe <laurenz@nospam.pn>
Newsgroups	comp.databases.postgresql
Subject	Re: Update Json column
Date	2018-03-08 11:36 +0000
Organization	A noiseless patient Spider
Message-ID	<p7r77m$snp$1@dont-email.me> (permalink)
References	(3 earlier) <p78k0s$ani$1@dont-email.me> <23a909c9-9a4e-462a-89fa-a1efda4fb198@googlegroups.com> <efaf09da-16e0-48ff-b4eb-5401cd6be4cd@googlegroups.com> <p7o5gf$g10$1@dont-email.me> <0b7cb08d-f57c-4d94-8da7-5878edd0f090@googlegroups.com>

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On Wed, 07 Mar 2018 00:09:05 -0800, forough m wrote:
>> You could use CASE:
>> 
>> UPDATE t SET j = CASE WHEN <j contains key>
>>                       THEN <j with 3 added>
>>                       ELSE <j with new key>
>>                  END
> 
> Wow, very good. thank you. How should i check <j contains key> ?

Hm. Why don't you look at the documentation, section
"JSON functions and operators":

https://www.postgresql.org/docs/current/static/functions-
json.html#FUNCTIONS-JSONB-OP-TABLE

@> is right there.

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Thread

Update Json column forough m <fmirkarimzade@gmail.com> - 2018-02-26 22:09 -0800
  Re: Update Json column Laurenz Albe <laurenz@nospam.pn> - 2018-02-27 13:04 +0000
    Re: Update Json column forough m <fmirkarimzade@gmail.com> - 2018-02-28 03:06 -0800
    Re: Update Json column forough m <fmirkarimzade@gmail.com> - 2018-02-28 03:21 -0800
      Re: Update Json column Laurenz Albe <laurenz@nospam.pn> - 2018-03-01 10:18 +0000
        Re: Update Json column forough m <fmirkarimzade@gmail.com> - 2018-03-05 01:44 -0800
          Re: Update Json column forough m <fmirkarimzade@gmail.com> - 2018-03-06 07:47 -0800
            Re: Update Json column Laurenz Albe <laurenz@nospam.pn> - 2018-03-07 07:48 +0000
              Re: Update Json column forough m <fmirkarimzade@gmail.com> - 2018-03-07 00:09 -0800
                Re: Update Json column Laurenz Albe <laurenz@nospam.pn> - 2018-03-08 11:36 +0000
                Re: Update Json column forough m <fmirkarimzade@gmail.com> - 2018-03-09 21:07 -0800
              Re: Update Json column forough m <fmirkarimzade@gmail.com> - 2018-03-07 00:10 -0800

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