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Connect R (#rstats) to heroku PostgreSQL — https://www.heroku.com/postgres
library(processx)
library(RPostgres)
library(httr)
library(dbplyr)
library(tidyverse)
# this example assumes you've created a heroku postgresql
# instance and have the app name (in this example, "rpgtestcon").
# use the heroku command-line app
# we do this as the creds change & it avoids disclosure
config <- run("heroku", c("config:get", "DATABASE_URL", "-a", "rpgtestcon"))
# ^^ gets us a URL, we need the parts
pg <- httr::parse_url(config$stdout)
# use the parts from ^^
dbConnect(RPostgres::Postgres(),
dbname = trimws(pg$path),
host = pg$hostname,
port = pg$port,
user = pg$username,
password = pg$password,
sslmode = "require"
) -> db_con
# hook it up to dbplyr
db <- src_dbi(db_con)
# boom
db
## src: PqConnection
## tbls:
xdf <- copy_to(db, iris, name="iris", overwrite = TRUE)
db
## src: PqConnection
## tbls: iris
xdf
## # Source: table<iris> [?? x 5]
## # Database: PqConnection
## Sepal.Length Sepal.Width Petal.Length Petal.Width Species
## <dbl> <dbl> <dbl> <dbl> <chr>
## 1 5.1 3.5 1.4 0.2 setosa
## 2 4.9 3.0 1.4 0.2 setosa
## 3 4.7 3.2 1.3 0.2 setosa
## 4 4.6 3.1 1.5 0.2 setosa
## 5 5.0 3.6 1.4 0.2 setosa
## 6 5.4 3.9 1.7 0.4 setosa
## 7 4.6 3.4 1.4 0.3 setosa
## 8 5.0 3.4 1.5 0.2 setosa
## 9 4.4 2.9 1.4 0.2 setosa
## 10 4.9 3.1 1.5 0.1 setosa
## # ... with more rows
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