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Re: Automatic deletion of orphaned rows
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* Re: Automatic deletion of orphaned rows
@ 2025-01-22 14:37  David G. Johnston <[email protected]>
  0 siblings, 1 reply; 2+ messages in thread

From: David G. Johnston @ 2025-01-22 14:37 UTC (permalink / raw)
  To: Ron Johnson <[email protected]>; +Cc: pgsql-generallists.postgresql.org <[email protected]>

On Wednesday, January 22, 2025, Ron Johnson <[email protected]> wrote:
>
>
>> I therefore propose a feature, to be able to specify in a table schema
>> that a row should be deleted if orphaned.
>
>
> For one thing, rows *can't* be orphaned if there's a foreign key
> reference.
>

The description was correct even though using probably imprecise
terminology.  The basic goal is to delete childless parents.

David J.


^ permalink  raw  reply  [nested|flat] 2+ messages in thread

* Re: Automatic deletion of orphaned rows
@ 2025-01-22 15:15  Ron Johnson <[email protected]>
  parent: David G. Johnston <[email protected]>
  0 siblings, 0 replies; 2+ messages in thread

From: Ron Johnson @ 2025-01-22 15:15 UTC (permalink / raw)
  To: pgsql-generallists.postgresql.org <[email protected]>

On Wed, Jan 22, 2025 at 9:37 AM David G. Johnston <
[email protected]> wrote:

> On Wednesday, January 22, 2025, Ron Johnson <[email protected]>
> wrote:
>>
>>
>>> I therefore propose a feature, to be able to specify in a table schema
>>> that a row should be deleted if orphaned.
>>
>>
>> For one thing, rows *can't* be orphaned if there's a foreign key
>> reference.
>>
>
> The description was correct even though using probably imprecise
> terminology.  The basic goal is to delete childless parents.
>

That's kinda what I thought he wrote, but it's so far beyond "normal" that
I dismissed the possibility.  Parents are allowed to not have
children, after all.

Is there *ANY* DBMS with a built-in reverse FK "parents must have children"
feature?

-- 
Death to <Redacted>, and butter sauce.
Don't boil me, I'm still alive.
<Redacted> lobster!


^ permalink  raw  reply  [nested|flat] 2+ messages in thread

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2025-01-22 14:37 Re: Automatic deletion of orphaned rows David G. Johnston <[email protected]>
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