::: {.cell hash='03_Data_preprocessing_cache/revealjs/unnamed-chunk-41_9cbebbdfdeaec3904d9dfd78579a2844'}

```{.r .cell-code}
left_join(x,y, by="key")
```

::: {.cell-output .cell-output-stdout}
```
# A tibble: 3 × 3
    key val_x.x val_x.y
  <dbl> <chr>   <chr>  
1     1 x1      y1     
2     2 x2      y2     
3     3 x3      <NA>   
```
:::
:::