Re: CONCAT function adding extra characters

From: Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
To: AI Rumman <rummandba(at)gmail(dot)com>, pgsql-general General <pgsql-general(at)postgresql(dot)org>
Subject: Re: CONCAT function adding extra characters
Date: 2021-06-15 19:05:56
Message-ID: 8021f42a-4193-f741-85ab-b6966e220880@aklaver.com
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On 6/15/21 11:55 AM, AI Rumman wrote:
> I am using Postgresql 10 and seeing a strange behavior in CONCAT
> function when I am concatenating double precision and int with a separator.
>
> select concat('41.1'::double precision,':', 20);
> Result:
> 41.1000000000000014:20
>
>
> Value 41.1 which double precision converts to 41.1000000014.
>
> Is that expected?

No.

What OS and version of same?

How was Postgres installed?

>
> Thanks.

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com

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