How to return all rows that exist in two data frames in the R programming language. More details: [ Ссылка ]
R code of this video:

data1 ＜- data.frame(x1 = 1:5, # Create first example data
x2 = letters[1:5],
x3 = "x")

data2 ＜- data.frame(x1 = 3:6, # Create second example data
x2 = letters[3:6],
x3 = c("x", "x", "y", "y"))

data_common1 ＜- generics::intersect(data1, data2) # Apply intersect function

install.packages("dplyr") # Install & load dplyr package
library("dplyr")

data_common2 ＜- inner_join(data1, data2) # Apply inner_join function

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