Package org.apache.spark.sql.connector.read

Interface SupportsPushDownTableSample

All Superinterfaces:

ScanBuilder

@Evolving
public interface SupportsPushDownTableSample
extends ScanBuilder

A mix-in interface for Scan. Data sources can implement this interface to push down SAMPLE.

Since:

3.3.0

Method Summary

Modifier and Type	Method	Description
default boolean	pushTableSample(double lowerBound, double upperBound, boolean withReplacement, long seed)	Deprecated.
default boolean	pushTableSample(double lowerBound, double upperBound, boolean withReplacement, long seed, SampleMethod sampleMethod)	Pushes down SAMPLE to the data source with the specified sampling method.

Methods inherited from interface org.apache.spark.sql.connector.read.ScanBuilder

build

Method Details

pushTableSample

@Deprecated(since="4.2.0")
default boolean pushTableSample(double lowerBound,
 double upperBound,
 boolean withReplacement,
 long seed)

Deprecated.

Pushes down BERNOULLI (row-level) SAMPLE to the data source.

pushTableSample

default boolean pushTableSample(double lowerBound,
 double upperBound,
 boolean withReplacement,
 long seed,
 SampleMethod sampleMethod)

Pushes down SAMPLE to the data source with the specified sampling method.