OK. So, looking at the above, you are saying that the user is "postgres" and that the table "test" is in the database "postgres" (which is likely also owned by "postgres"). I'm unsure from your response that this is correct. Is "test" in the "postgres" data base? If not, you might get away with:
# replace proper-database in the following with the correct data base name, which contains the "test" table
con <- dbConnect(drv, dbname="proper-database", host="localhost", port='5432', user='postgres', password='brothers')
Normally, when I am logged in a myself, my code usually looks a bit like:
dbname <- Sys.info['user']; # the data base name in PostgreSQL is the same as my login id
con <- dbConnect(drv,dbname=dbname); # connect to PostgreSQL on the local host as myself (implicit).
Which says that everyone coming in who are on the local host are automatically logged in as their Linux (in my case) id.
Your code is connecting via TCPIP because you have the host= & port= parameters. This is not normally needed for users running on the same physical machine as the PostgreSQL data base server. So I'm too lazy to do it [grin].
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