Nóta
Teastaíonn údarú chun rochtain a fháil ar an leathanach seo. Is féidir leat triail a bhaint as shíniú isteach nó eolairí a athrú.
Teastaíonn údarú chun rochtain a fháil ar an leathanach seo. Is féidir leat triail a bhaint as eolairí a athrú.
Returns a DataSourceReader instance for reading data.
The implementation is required for readable data sources.
Syntax
reader(schema: StructType)
Parameters
| Parameter | Type | Description |
|---|---|---|
schema |
StructType | The schema of the data to be read. |
Returns
DataSourceReader
A reader instance for this data source.