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#pragma once
#include <Storages/ColumnsDescription.h>
#include <Parsers/IAST.h>
#include <Parsers/queryToString.h>
#include <Interpreters/Cluster.h>
namespace DB
{
class Context;
struct StorageID;
/// Find the names and types of the table columns on any server in the cluster.
/// Used to implement the `remote` table function and others.
ColumnsDescription getStructureOfRemoteTable(
const Cluster & cluster,
const StorageID & table_id,
ContextPtr context,
const ASTPtr & table_func_ptr = nullptr);
using ColumnsDescriptionByShardNum = std::unordered_map<UInt32, ColumnsDescription>;
/// Returns descriptions of columns of type Object for each shard.
ColumnsDescriptionByShardNum getExtendedObjectsOfRemoteTables(
const Cluster & cluster,
const StorageID & remote_table_id,
const ColumnsDescription & storage_columns,
ContextPtr context);
}
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