求助！我在用R语言编程处理数据，合并数据时出现问题了！rm(list=ls())
library(plyr)
library(magrittr)
library(dplyr)
shuj=read.csv("1100-1200xin.csv",header=T,as.is=T)
subway=read.csv("di.csv",header=T,as.is=T)
location=read.csv("ditiejing.csv",header=T,as.is=T,sep="\t")
shuj%<>%join(subway,by=c("xuhao","Date"),type="left",match="all")%>%filter(Time>=TimeD&Time<=Time1)
Error: found duplicated column name
见下图。

显示shuj和subway有重复的列名，可是我检查了shuj和subway两个表没有重复的列名，我也不知道怎么回事呢？恳请各位懂R的人帮助！两个表见下图