ClickHouse/src/DataTypes/getLeastSupertype.h
2020-04-03 18:14:31 +03:00

18 lines
396 B
C++

#pragma once
#include <DataTypes/IDataType.h>
namespace DB
{
/** Get data type that covers all possible values of passed data types.
* If there is no such data type, throws an exception.
*
* Examples: least common supertype for UInt8, Int8 - Int16.
* Examples: there is no least common supertype for Array(UInt8), Int8.
*/
DataTypePtr getLeastSupertype(const DataTypes & types);
}