info = parquetinfo(filename)
| Parameter | Description |
|---|---|
| filename | a string: Parquet file to inspect. |
| Parameter | Description |
|---|---|
| info | a nelson.io.parquet.ParquetInfo object. |
nelson.io.parquet.ParquetInfo stores metadata returned by parquetinfo.
Properties are Filename, FileSize, NumRows, NumVariables, NumRowGroups, RowGroups, Variables, CreatedBy, and dependent property VariableNames.
RowGroups is a table with row group metadata. Variables is a structure with variable names, Parquet types, and compression information.
filename = [tempdir(), 'doc_ParquetInfo.parquet'];
T = table(int32([1; 2; 3]), [10; 20; 30], 'VariableNames', {'Id', 'Value'});
parquetwrite(filename, T);
info = parquetinfo(filename);
class(info)
info.Filename
info.VariableNames| Version | Description |
|---|---|
| 2.0.0 | initial version |