Hi all,
We have a column (varchar) that has plain text time and it is indexed.
When I do a query with the index, all the data is in the right order,
but when I user ORDER BY .. DESC, the order is messed up. Example:
By index 1: (date, time, data)
SELECT * from t1;
date (date type) time (varchar) data
2007-01-17 8h40 d1
2007-01-30 9h30 d2
2007-01-30 12h00 d3
2007-01-30 13h45 d4
2007-01-30 17h20 d5
SELECT * from t1 ORDER BY date, time DESC;
date (date type) time (varchar) data
2007-01-30 9h30 d2
2007-01-30 17h20 d5
2007-01-30 13h45 d4
2007-01-30 12h00 d3
2007-01-17 8h40 d1
I don't know why, this is like if the 'time' varchar was trimmed then
used for the ordering.
How can I fix that so that the result is exactly like the first one but
perfectly reversed in it's order?
Best regards.
--
Alexandre Leclerc
Projets spéciaux
Ipso Systèmes Stratégiques inc.
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Tel: 450-424-6847 ext. 108 / 1-800-879-4776
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