| From: | gmail Vladimir Koković <vladimir(dot)kokovic(at)gmail(dot)com> |
|---|---|
| To: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
| Cc: | pgsql-novice <pgsql-novice(at)postgresql(dot)org>, Ken Benson <Ken(at)infowerks(dot)com> |
| Subject: | Re: chr(3) and 3::text |
| Date: | 2020-03-28 15:39:51 |
| Message-ID: | 473c9cab-3d3c-7bb0-bb34-51ea81f689ff@gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-novice |
On 28.3.20. 16:25, David G. Johnston wrote:
>
> The convention here is to bottom or inline post, trimming unnecessary
> content.
>
> Its that way because :: is defined to make it that way.
>
> 3 has a type of integer
> '3' has a type of text
> ::<type> is the PostgreSQL type casting operator that casts its left
> to to <type> (see the documentation I linked to)
>
> So:
>
> integer::text == text
>
> cast(integer as text) == text
>
> is the SQL Standard equivalent expression
>
> David J.
>
integer::text == text, but which character 0x03 or 0x33 ?
Text should contain characters.
Characters is from character set.
Character 0x03 is valid in ASCII and UTF-8 character sets.
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