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22 lines
393 B
C++
22 lines
393 B
C++
#pragma once
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#include <DataStreams/IBlockInputStream.h>
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namespace DB
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{
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/// Reverses an order of rows in every block in a data stream.
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class ReverseBlockInputStream : public IBlockInputStream
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{
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public:
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ReverseBlockInputStream(const BlockInputStreamPtr & input);
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String getName() const override;
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Block getHeader() const override;
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protected:
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Block readImpl() override;
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};
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}
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