Sql ManualSql FunctionsScalar FunctionsBitmap FunctionsBITMAP_COUNTバージョン: 3.xこのページの見出しBITMAP_COUNTDescription Count the number of elements in the input BITMAP Syntax BITMAP_COUNT(<bitmap>) Parameters ParameterDescription<bitmap>a BITMAP Return Value Returns an integer Examples select bitmap_count(to_bitmap(1)) cnt; +------+| cnt |+------+| 1 |+------+