Re: 3 Parameters in pg_settings in CamelCase

2021年1月20日(水) 17:56 William Sescu (Suva) <william(dot)sescu(at)suva(dot)ch>:

> Hello %
>
>
>
> Is there any particular reason why 3 parameters out of 326 (in PostgreSQL
> 12.4) are in CamelCase?
>
> At least when you query from pg_settings.
>
>
>
> (postgres(at)[local]:55000)[postgres]> select name from pg_settings order by
> name;
>
> name
>
> ----------------------------------------
>
> …
>
> …
>
> DateStyle
>
> IntervalStyle
>
> TimeZone
>
> …
>
> …
>
>
>
> All others are in lowercase. Even in the postgresql.conf these parameters
> are in lowercase.
>
>
>
> $ cat postgresql.conf | egrep -i '(datestyle|intervalstyle|timezone)'
>
> datestyle = 'iso, mdy'
>
> #intervalstyle = 'postgres'
>
> timezone = 'Europe/Zurich'
>

I think the simple answer is "because they've always been like that" (at
least since PostgreSQL 7.3 [*])
and no-one has cared enough to change them.

[*]
https://git.postgresql.org/pg/commitdiff/f0811a74b37427d7ee5eee56b00f7f2ea323d7d6

Regards

Ian Barwick

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