mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-09 10:00:54 +00:00
14 lines
350 B
C++
14 lines
350 B
C++
#include <Columns/ColumnNullable.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/** Replace Nullable key_columns to corresponding nested columns.
|
|
* In 'null_map' return a map of positions where at least one column was NULL.
|
|
* @returns ownership column of null_map.
|
|
*/
|
|
ColumnPtr extractNestedColumnsAndNullMap(ColumnRawPtrs & key_columns, ConstNullMapPtr & null_map);
|
|
|
|
}
|