Question

I have a schema like the following

id (INT)
Cycle_Number (INT)
Cycle_Day (INT)
Date (date)

...other columns irrelevant to the question...

How can I get the row that has the max Cycle_Day within the max Cycle_Number

For example, say I have the following data

ID Cycle_Number Cycle_Day Date
1  1            1         2011-12-01
2  1            2         2011-12-02
3  2            1         2011-12-03
4  2            2         2011-12-04
5  2            3         2011-12-05
6  2            4         2011-12-06
7  3            1         2011-12-07
8  3            2         2011-12-08
9  3            3         2011-12-09

The query would return row 9. (It has the highest Cycle_Day within the highest Cycle_Number)

Thanks

Answer 1

this one is compatible MySql 5.5 with no joint tables

SELECT id
FROM cycles
ORDER BY Cycle_Number DESC , Cycle_Day DESC
LIMIT 0 , 1

Regards