sdf_schema {sparklyr} | R Documentation |
Read the schema of a Spark DataFrame.
sdf_schema(x)
x |
An object coercable to a Spark DataFrame (typically, a
|
The type
column returned gives the string representation of the
underlying Spark type for that column; for example, a vector of numeric
values would be returned with the type "DoubleType"
. Please see the
Spark Scala API Documentation
for information on what types are available and exposed by Spark.
An R list
, with each list
element describing the
name
and type
of a column.