Re: feature proposal ...

> the problem is: COPY can write data returned by a SELECT statement to a 
> file. our idea is to implement precisely that.
> 
> example:
> 
> COPY TO file_name USING some_select_statement;

I have run into plenty of cases where I wanted to dump part of a
structure and this could be used for that, but I've always found that
temporary tables were sufficient and equally SQL scriptable

        CREATE TEMP TABLE tab AS SELECT ...; COPY tab TO file_name;
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