Read a Column from a Spark DataFrame
R/sdf_wrapper.R
sdf_read_column
Description
Read a single column from a Spark DataFrame, and return the contents of that column back to R.
Usage
sdf_read_column(x, column) Arguments
| Arguments | Description |
|---|---|
| x | A spark_connection, ml_pipeline, or a tbl_spark. |
| column | The name of a column within x. |
Details
It is expected for this operation to preserve row order.