From: | Félix GERZAGUET <felix(dot)gerzaguet(at)gmail(dot)com> |
---|---|
To: | dtyshecky(at)gmail(dot)com |
Cc: | pgsql-bugs(at)postgresql(dot)org |
Subject: | Re: BUG #13747: Like clause ignoring raws with null value |
Date: | 2015-10-31 10:54:56 |
Message-ID: | CANVwZttG1eETzj0uk9aQ--fFH3w19ZjGzp_hKf-tgF1MTrLX6w@mail.gmail.com |
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Lists: | pgsql-bugs |
On Fri, Oct 30, 2015 at 12:08 AM, <dtyshecky(at)gmail(dot)com> wrote:
> I am executing select with like clause on the field X (select * from table
> where x like '%ABC%')
>
> In result I don't receive the raws with null in X column so I have to
> manually state (where X is null or X like ...)
>
> I would expect to receive columns with null.
>
I don't understand your reasons either, but you can achieve what you want
with:
select * from table where coalesce(x, 'ABC') like '%ABC%'
but I find that less clear (and maybe a little bit less performant than)
than:
select * from table where x like '%ABC%' or x is null
--
Félix
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