mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-16 11:22:12 +00:00
29 lines
1.1 KiB
C++
29 lines
1.1 KiB
C++
#pragma once
|
|
|
|
#include <Interpreters/Context_fwd.h>
|
|
#include <Databases/TablesLoader.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/// Load tables from system database. Only real tables like query_log, part_log.
|
|
/// You should first load system database, then attach system tables that you need into it, then load other databases.
|
|
void loadMetadataSystem(ContextMutablePtr context);
|
|
|
|
/// Load tables from databases and add them to context. Database 'system' and 'information_schema' is ignored.
|
|
/// Use separate function to load system tables.
|
|
void loadMetadata(ContextMutablePtr context, const String & default_database_name = {});
|
|
|
|
/// Background operations in system tables may slowdown loading of the rest tables,
|
|
/// so we startup system tables after all databases are loaded.
|
|
void startupSystemTables();
|
|
|
|
/// Converts `system` database from Ordinary to Atomic (if needed)
|
|
void maybeConvertSystemDatabase(ContextMutablePtr context);
|
|
|
|
/// Converts all databases (except system) from Ordinary to Atomic if convert_ordinary_to_atomic flag exists
|
|
void convertDatabasesEnginesIfNeed(ContextMutablePtr context);
|
|
|
|
}
|