ComenzarEmpieza gratis

Be polite and ...

Every time you connect to a database using dbConnect(), you're creating a new connection to the database you're referencing. RMySQL automatically specifies a maximum of open connections and closes some of the connections for you, but still: it's always polite to manually disconnect from the database afterwards. You do this with the dbDisconnect() function.

The code that connects you to the database is already available, can you finish the script?

Este ejercicio forma parte del curso

Intermediate Importing Data in R

Ver curso

Instrucciones del ejercicio

  • Using the technique you prefer, build a data frame long_tweats. It selects the post and date columns from the observations in tweats where the character length of the post variable exceeds 40.
  • Print long_tweats.
  • Disconnect from the database by using dbDisconnect().

Ejercicio interactivo práctico

Prueba este ejercicio completando el código de muestra.

# Connect to the database
library(DBI)
con <- dbConnect(RMySQL::MySQL(),
                 dbname = "tweater",
                 host = "courses.csrrinzqubik.us-east-1.rds.amazonaws.com",
                 port = 3306,
                 user = "student",
                 password = "datacamp")

# Create the data frame  long_tweats


# Print long_tweats
print(long_tweats)

# Disconnect from the database
Editar y ejecutar código