ClickHouse/dbms/src/Dictionaries/DictionarySourceHelpers.h
2017-05-25 23:17:23 +03:00

26 lines
557 B
C++

#pragma once
#include <vector>
#include <common/Types.h>
#include <Columns/IColumn.h>
namespace DB
{
class IBlockOutputStream;
using BlockOutputStreamPtr = std::shared_ptr<IBlockOutputStream>;
struct DictionaryStructure;
/// Write keys to block output stream.
/// For simple key
void formatIDs(BlockOutputStreamPtr & out, const std::vector<UInt64> & ids);
/// For composite key
void formatKeys(const DictionaryStructure & dict_struct, BlockOutputStreamPtr & out,
const Columns & key_columns, const std::vector<std::size_t> & requested_rows);
}