or na.strings = c(“none”)? Thank you, Tommy Reply Joachim February 15, 2021 8:33 am Hi Tommy, In this case I would do this: 1) Import the two data frames one-by-one 2) Harmonize data frame classes using the as.numeric function 3) Merge data frames I hope that helps! Joac...
Write an SQL query to report the first name, last name, city, and state of each person in the Person table. If the address of a personId is not present in the Address table, report null instead. Return the result table in any order. The query result format is in the following exampl...