查找R中两个数据帧之间的差异

df1 <- data.frame(A = c(1, 2, 3), B = c("a", "b", "c"))
df2 <- data.frame(A = c(2, 3, 4), B = c("b", "c", "d"))

diff_rows <- setdiff(df1, df2)

library(dplyr)

df1 <- data.frame(A = c(1, 2, 3), B = c("a", "b", "c"))
df2 <- data.frame(A = c(2, 3, 4), B = c("b", "c", "d"))

diff_rows <- anti_join(df1, df2, by = c("A", "B"))

diff_df <- function(df1, df2) {
  rows <- !duplicated(rbind(df1, df2))
  diff_rows <- rbind(df1, df2)[rows, ]
  return(diff_rows)
}

df1 <- data.frame(A = c(1, 2, 3), B = c("a", "b", "c"))
df2 <- data.frame(A = c(2, 3, 4), B = c("b", "c", "d"))

diff_rows <- diff_df(df1, df2)