ClickHouse/src/Storages/System/StorageSystemDistributionQueue.h
Azat Khuzhin 389f78ceee Add system.distribution_queue
system.distribution_queue contains the following columns:
- database
- table
- data_path
- is_blocked
- error_count
- data_files
- data_compressed_bytes
2020-06-04 02:36:16 +03:00

30 lines
851 B
C++

#pragma once
#include <ext/shared_ptr_helper.h>
#include <Storages/System/IStorageSystemOneBlock.h>
namespace DB
{
class Context;
/** Implements the `distribution_queue` system table, which allows you to view the INSERT queues for the Distributed tables.
*/
class StorageSystemDistributionQueue final : public ext::shared_ptr_helper<StorageSystemDistributionQueue>, public IStorageSystemOneBlock<StorageSystemDistributionQueue>
{
friend struct ext::shared_ptr_helper<StorageSystemDistributionQueue>;
public:
std::string getName() const override { return "SystemDistributionQueue"; }
static NamesAndTypesList getNamesAndTypes();
protected:
using IStorageSystemOneBlock::IStorageSystemOneBlock;
void fillData(MutableColumns & res_columns, const Context & context, const SelectQueryInfo & query_info) const override;
};
}