Re: proposal: psql \setfileref

Hi

I am sending a initial implementation of psql content commands. This design is reaction to Tom's objections against psql file ref variables. This design is more cleaner, more explicit and more practical - import can be in one step.

Now supported commands are:

r - read file without any modification

rq - read file, escape as literal and use outer quotes

rb - read binary file - transform to hex code string

rbq - read binary file, transform to hex code string and use outer quotes

Usage:

create table testt(a xml);
insert into test values( {rq /home/pavel/.local/share/rhythmbox/rhythmdb.xml} );

\set xxx {r /home/pavel/.local/share/rhythmbox/rhythmdb.xml}

This patch is demo of this design - one part is redundant - I'll clean it in next iteration.

Regards

Pavel