This greatly reduces the number of roundtrips to the database.
YAT6VX542JXMSSS642S52K72636L7IM3F6ZDHCOUUB3325S7NHOQC
my @columns = ( "id", "project", "jobset", "job", "system", "finished", "drvpath", "timestamp", "buildstatus" );
my @columns =
( "id", "project", "jobset", "job", "system", "finished", "drvpath", "timestamp", "buildstatus"
, { "outpaths" => \ "(select string_agg(path, ' ') from BuildOutputs where build = me.id)" }
);