错误：在R中安装dplyr时

Question

Error: package or namespace load failed for ‘dplyr’ in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):  there is no package called ‘R6’

Answer 1

您需要强制安装依赖项。

select t1.*, t2.*
from Table1 t1
inner join Table2 t2 ON t1.id = t2.id and (t1.Ans1 <> t2.Ans1 OR t1.Ans2 <> t2.Ans2)

如果仍然无效，请尝试自行安装丢失的软件包，例如

install.packages("dplyr", dependencies=TRUE)