错误消息:
错误:
by
不能包含LHS缺少的连接列id
致电rlang::last_error()
查看回溯
我尝试了很多变体,但是似乎我无法让Rstudio认识到“ id”是两个单独表中的一列,不确定应该怎么做。
输入代码:
## View the names of the tables in the database
tables <- dbListTables(mydb)
tables
## View the columns in each of the tables that we have and store each as a dataframe
orders <- data.frame(dbListFields(mydb, 'orders'))
product_sales <- data.frame(dbListFields(mydb, 'product_sales'))
orders
product_sales
library(tidyverse)
# perform a left join to create one table
left_join(orders, product_sales, by = "id")