On Wed, Sep 20, 2017 at 09:35:06AM -0400, Peter Eisentraut wrote:
>
> The difference is that those create associations between two separate
> objects (cast: type1 <-> type2, transform: type <-> language). A
> subscripting is just a property of a type.
>
> --
> Peter Eisentraut http://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
Yes, indeed. I agree.
As a conclusion:
- additional field are needed to pg_type for *_fetch and *_assign functions to solve dependency problem
- ALTER TYPE requires a modification to add or drop subscripting from existing type (I am not sure that it should be
doneby this patch, maybe better to do it by a separate patch)
--
Arthur Zakirov
Postgres Professional: http://www.postgrespro.com
Russian Postgres Company
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