"Etsuro Fujita" <[email protected]> writes:
> I'd like to add the following options to the SQL COPY command and the psql
> \copy
> instruction:
> * PREPROCESSOR: Specifies the user-supplied program for COPY IN. The data
> from an input file is preprocessed by the program before the data is loaded
> into
> a postgres table.
> * POSTPROCESSOR: Specifies the user-supplied program for COPY OUT. The
> data
> from a postgres table is postprocessed by the program before the data is
> stored
> in an output file.
The proposed patch causes the external processor programs to execute
with the privileges of the database server, which seems like a pretty
horrid idea. At the very least this would imply limiting use of the
feature to superusers, which greatly restricts its use-case.
I think it would be a lot better if this were designed so that the
processor programs executed on client side. Which would probably make
it not a COPY patch at all, but something in psql.
regards, tom lane
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