GROUPING_ID
description
Syntax
GROUPING_ID(expr)
GROUP_ID用于区分相同分组标准的分组统计结果。
example
MySQL > SELECT COL1,GROUPING_ID(COL2) AS 'GroupingID' FROM tbl GROUP BY ROLLUP (COL1, COL2);
+------+------------+
| COL1 | GroupingID |
+------+------------+
| NULL | 1 |
| 2.20 | 1 |
| 2.20 | 0 |
| 1.10 | 1 |
| 1.10 | 0 |
+------+------------+
keywords
GROUPING_ID