ClickHouse/dbms/src/DataStreams/NullBlockInputStream.h
proller 2a7813049e LibDictionarySource : First lib dictionary version with only uint64 type support (#1150)
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2017-09-05 04:08:26 +03:00

20 lines
280 B
C++

#pragma once
#include <DataStreams/IBlockInputStream.h>
namespace DB
{
/** Empty stream of blocks.
*/
class NullBlockInputStream : public IBlockInputStream
{
public:
Block read() override { return Block(); }
String getName() const override { return "Null"; }
};
}