从R

Question

我能够建立连接，现在可以看到对象，但是如何查看表列表和查询表呢？

library(DBI)
library(RPostgres)

con <- dbConnect(drv = RPostgres::Postgres(), 
             user = "XXXXXX", 
             password = "XXXXXX", 
             host     = "XXXXXX.us-east-1.rds.amazonaws.com", 
             port     = 5432, 
             dbname   = "XXXXXX")

> dbListObjects(con)
##                                    table is_prefix
## 1               <Id> schema = pg_catalog      TRUE
## 2             <Id> schema = aws_coretech      TRUE
## 3              <Id> schema = sfdc_global      TRUE

> dbListTables(con)
## character(0)