merge vs join in r code example
Example: r merge inner join
merge(x = df1, y = df2, by = "id",
all.x=TRUE)[,c("df1_var1", "df1_var2", "df2_var1")]
merge(x = df1, y = df2, by = "id",
all.x=TRUE)[,c("df1_var1", "df1_var2", "df2_var1")]