ClickHouse/dbms/Storages/StorageValues.h

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#pragma once
#include <ext/shared_ptr_helper.h>
#include <Storages/IStorage.h>
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namespace DB
{
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/* One block storage used for values table function
* It's structure is similar to IStorageSystemOneBlock
*/
class StorageValues final : public ext::shared_ptr_helper<StorageValues>, public IStorage
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{
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friend struct ext::shared_ptr_helper<StorageValues>;
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public:
std::string getName() const override { return "Values"; }
Pipes read(
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const Names & column_names,
const SelectQueryInfo & query_info,
const Context & context,
QueryProcessingStage::Enum processed_stage,
size_t max_block_size,
unsigned num_streams) override;
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private:
Block res_block;
protected:
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StorageValues(const StorageID & table_id_, const ColumnsDescription & columns_, const Block & res_block_);
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};
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}