list.md
In nanoparquet: Read and Write 'Parquet' Files

LIST schema

Code
  as.data.frame(read_parquet_schema(pf))
Output
            file_name r_col    name       r_type   type type_length
  1 data/list.parquet    NA  schema         <NA>   <NA>          NA
  2 data/list.parquet     1       a      integer  INT32          NA
  3 data/list.parquet     2       l list(double)   <NA>          NA
  4 data/list.parquet     2    list         <NA>   <NA>          NA
  5 data/list.parquet     2 element         <NA> DOUBLE          NA
    repetition_type converted_type logical_type num_children scale precision
  1        REQUIRED           <NA>                         2    NA        NA
  2        OPTIONAL           <NA>                        NA    NA        NA
  3        OPTIONAL           LIST         LIST            1    NA        NA
  4        REPEATED           <NA>                         1    NA        NA
  5        OPTIONAL           <NA>                        NA    NA        NA
    field_id children
  1       NA         
  2       NA         
  3       NA        4
  4       NA        5
  5       NA