Order and group by date in Mysql

Question

Hi all and thanks in advance. I have a small problem which can not resolve, I have this table, and I want to sort by date and group it (but I only show 1 row per idCAT)

| id | idcat | name |     date   |

| 1  | 3     | xx   | 2011-01-02 |

| 2  | 4     | xf   | 2011-01-02 |

| 3  | 3     | cd   | 2011-01-01 |

| 4  | 1     | cg   | 2011-01-04 |

| 5  | 4     | ce   | 2011-01-06 |

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would like to stay that way, try in a way but I can not

| 2  | 4     | xf   | 2011-01-02 |

| 3  | 3     | cd   | 2011-01-01 |

| 4  | 1     | cg   | 2011-01-04 |

Order by ID

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Thank's a one friend the work.

SELECT id, idcat, name, date FROM (SELECT * FROM data ORDER BY idcat, date ) m GROUP BY idcat

Answer 1

I can't test conveniently atm, but try this:

SELECT FIRST(id), idcat, FIRST(name), FIRST(date) AS d FROM myTable GROUP BY idcat ORDER BY d;

Note the use of the FIRST calls to pick the first row in the table with any particular idcat.

Answer 2

If you are trying to get groupings by the idcat, then sorted by date:

select id, idcat, name, date from myTable group by idcat order by date;