Concatenate one or more Table objects into a single table. This operation does not copy array data, but instead creates new chunked arrays for each column that point at existing array data.
Arguments
- ...
A Table
- unify_schemas
If TRUE, the schemas of the tables will be first unified with fields of the same name being merged, then each table will be promoted to the unified schema before being concatenated. Otherwise, all tables should have the same schema.
Examples
tbl <- arrow_table(name = rownames(mtcars), mtcars)
prius <- arrow_table(name = "Prius", mpg = 58, cyl = 4, disp = 1.8)
combined <- concat_tables(tbl, prius)
tail(combined)$to_data_frame()
#> # A tibble: 6 x 12
#> name mpg cyl disp hp drat wt qsec vs am gear carb
#> <chr> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1 Lotus Europa 30.4 4 95.1 113 3.77 1.51 16.9 1 1 5 2
#> 2 Ford Panter~ 15.8 8 351 264 4.22 3.17 14.5 0 1 5 4
#> 3 Ferrari Dino 19.7 6 145 175 3.62 2.77 15.5 0 1 5 6
#> 4 Maserati Bo~ 15 8 301 335 3.54 3.57 14.6 0 1 5 8
#> 5 Volvo 142E 21.4 4 121 109 4.11 2.78 18.6 1 1 4 2
#> 6 Prius 58 4 1.8 NA NA NA NA NA NA NA NA