Re: Feature Proposal: Column-Level DELETE Operation in SQL

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Christophe Pettus
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Re: Feature Proposal: Column-Level DELETE Operation in SQL
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A4759080-C019-4017-A2EB-2A032D5008A8@thebuild.com
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Re: Feature Proposal: Column-Level DELETE Operation in SQL thombrown1979@duck.com


> On Apr 21, 2025, at 09:53, Abhishek Hatgine  wrote:
> However, there’s no specific, expressive way to delete the value of a column directly. The typical workaround is to use:
> UPDATE Customers SET Address = NULL WHERE CustomerID = 103;

I'm not sure I agree that's unexpressive.  When you consider the relational model, it's not clear to me what "deleting the value of a column" means.  It could be:

1. Removing the current value, which begs the question of "replacing it with what?"
2. Dropping the column, for which we already have ALTER TABLE ... DROP COLUMN.

Can you give a bit more detail about what the state of the table is when you have "deleted the value of a column directly"?

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