Re: Add pg_basetype() function to obtain a DOMAIN base type

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От Tomas Vondra
Тема Re: Add pg_basetype() function to obtain a DOMAIN base type
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Msg-id 53392389-7620-46af-889e-cd1938a53afa@enterprisedb.com
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Ответ на Re: Add pg_basetype() function to obtain a DOMAIN base type  (jian he <jian.universality@gmail.com>)
Ответы Re: Add pg_basetype() function to obtain a DOMAIN base type  (jian he <jian.universality@gmail.com>)
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Hi,

On 1/2/24 01:00, jian he wrote:
> On Mon, Dec 4, 2023 at 5:11 PM John Naylor <johncnaylorls@gmail.com> wrote:
>>
>> On Thu, Sep 28, 2023 at 12:22 AM Alexander Korotkov
>> <aekorotkov@gmail.com> wrote:
>>> The one thing triggering my perfectionism is that the patch does two
>>> syscache lookups instead of one.
>>
>> For an admin function used interactively, I'm not sure why that
>> matters? Or do you see another use case?
> 
> I did a minor refactor based on v1-0001.
> I think pg_basetype should stay at "9.26.4. System Catalog Information
> Functions".
> So I placed it before pg_char_to_encoding.
> Now functions listed on "Table 9.73. System Catalog Information
> Functions" will look like alphabetical ordering.
> I slightly changed the src/include/catalog/pg_proc.dat.
> now it looks like very similar to pg_typeof
> 
> src6=# \df pg_typeof
>                            List of functions
>    Schema   |   Name    | Result data type | Argument data types | Type
> ------------+-----------+------------------+---------------------+------
>  pg_catalog | pg_typeof | regtype          | "any"               | func
> (1 row)
> 
> src6=# \df pg_basetype
>                             List of functions
>    Schema   |    Name     | Result data type | Argument data types | Type
> ------------+-------------+------------------+---------------------+------
>  pg_catalog | pg_basetype | regtype          | "any"               | func
> (1 row)
> 
> v2-0001 is as is in the first email thread, 0002 is my changes based on v2-0001.


I think the patch(es) look reasonable, so just a couple minor comments.

1) We already have pg_typeof() function, so maybe we should use a
similar naming convention pg_basetypeof()?

2) I was going to suggest using "any" argument, just like pg_typeof, but
I see 0002 patch already does that. Thanks!

3) I think the docs probably need some formatting - wrapping lines (to
make it consistent with the nearby stuff) and similar stuff.


Other than that it looks fine to me. It's a simple patch, so if we can
agree on the naming I'll get it cleaned up and pushed.


regards

-- 
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company



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