Query tweater (2)
Apart from checking equality, you can also check for less than and greater than relationships, with < and >, just like in R.
con, a connection to the tweater database, is again available.
To ćwiczenie jest częścią kursu
Intermediate Importing Data in R
Instrukcje do ćwiczenia
- Create a data frame,
latest, that selects thepostcolumn from thetweatstable observations where thedateis higher than'2015-09-21'. - Print out
latest.
Interaktywne ćwiczenie praktyczne
Spróbuj tego ćwiczenia, uzupełniając ten przykładowy kod.
# 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")
# Import post column of tweats where date is higher than '2015-09-21': latest
# Print latest