If i understand you well ( i am half asleep ), what you want is a list of titles with the greatest version.
Something like this

+-------+---------+---------+
| title | doc_num | version |
+-------+---------+---------+
| bar   |    1234 |       9 |
| foo   |    1234 |       7 |
| other |    2121 |       7 |
+-------+---------+---------+
[download]

Well if it is right, all what you need is to change your ORDER BY, for a GROUP by.

SELECT title, doc_num, MAX(version) AS version from test GROUP BY titl
+e;
# For this example "test" is the table name
[download]

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Failure is not an option - it is a privilege reserved for
those who do not try hard enough.

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