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Group by .. with rollup having
Posted by: KimSeong Loh
Date: August 02, 2006 07:42PM

Taking the example from http://dev.mysql.com/doc/refman/5.0/en/group-by-modifiers.html

mysql> SELECT year, SUM(profit) FROM sales GROUP BY year WITH ROLLUP;
+------+-------------+
| year | SUM(profit) |
+------+-------------+
| 2000 | 4525 |
| 2001 | 3010 |
| NULL | 7535 |
+------+-------------+

What is the expected behaviour if it is changed to
mysql> SELECT year, SUM(profit) as S FROM sales GROUP BY year WITH ROLLUP HAVING s > 4000;
+------+-------------+
| year | SUM(profit) |
+------+-------------+
| 2000 | 4525 |
| NULL | 7535 |
+------+-------------+
Should it be 4525 or 7535?
I believe I get 7535.

Maybe the exact behaviour on such situation should be documented.

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