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help / color / mirror / Atom feedFrom: Peter Eisentraut <[email protected]>
To: Haibo Yan <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Corey Huinker <[email protected]>
Cc: jian he <[email protected]>
Cc: Zsolt Parragi <[email protected]>
Cc: Vik Fearing <[email protected]>
Cc: David G. Johnston <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: implement CAST(expr AS type FORMAT 'template')
Date: Thu, 9 Jul 2026 09:20:29 +0200
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On 06.07.26 19:14, Haibo Yan wrote:
> The cases where I think a generic mechanism could be useful are
> broader than that. For example:
>
> text <-> date/time using datetime templates
> text <-> numeric using number templates
> text <-> bytea using hex/base64/escape
> text/bytea <-> extension types
> using external representations such as
> WKT/WKB/GeoJSON for geometry types
One problem I see is that this would dictate that there is only one
possible format language for each of these conversions.
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Subject: Re: implement CAST(expr AS type FORMAT 'template')
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