1. 学习
    2. /
  2. 课程
    3. /
  3. Intermediate Importing Data in R
Connected

练习

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.

说明

100 XP
  • Create a data frame, latest, that selects the post column from the tweats table observations where the date is higher than '2015-09-21'.
  • Print out latest.