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#pragma once
#include <optional>
#include <Storages/IStorage.h>
namespace DB
{
/* Generates random data for given schema.
*/
class StorageGenerateRandom final : public IStorage
{
public:
StorageGenerateRandom(
const StorageID & table_id_,
const ColumnsDescription & columns_,
const String & comment,
UInt64 max_array_length,
UInt64 max_string_length,
const std::optional<UInt64> & random_seed);
std::string getName() const override { return "GenerateRandom"; }
Pipe read(
const Names & column_names,
const StorageSnapshotPtr & storage_snapshot,
SelectQueryInfo & query_info,
ContextPtr context,
QueryProcessingStage::Enum processed_stage,
size_t max_block_size,
size_t num_streams) override;
bool supportsTransactions() const override { return true; }
private:
UInt64 max_array_length = 10;
UInt64 max_string_length = 10;
UInt64 random_seed = 0;
};
}
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