mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-16 11:22:12 +00:00
4e76629aaf
- lots of static_cast - add safe_cast - types adjustments - config - IStorage::read/watch - ... - some TODO's (to convert types in future) P.S. That was quite a journey... v2: fixes after rebase v3: fix conflicts after #42308 merged Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
33 lines
759 B
C++
33 lines
759 B
C++
#pragma once
|
|
|
|
#include <Storages/System/IStorageSystemOneBlock.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
class Context;
|
|
|
|
/** Implements system table 'columns', that allows to get information about columns for every table.
|
|
*/
|
|
class StorageSystemColumns final : public IStorage
|
|
{
|
|
public:
|
|
explicit StorageSystemColumns(const StorageID & table_id_);
|
|
|
|
std::string getName() const override { return "SystemColumns"; }
|
|
|
|
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 isSystemStorage() const override { return true; }
|
|
};
|
|
|
|
}
|