> Do you have an index on files that starts with dir_id and
> an index on dirs that stats with id and having date in the files
> index (after dir_id) might be helpful although I'm not sure.
Sorry, I don't understand exactly what you mean, but...
> you could provide the output of
> show keys from files;
> show keys from dirs;
>
> it would be helpful..
...Here's the output of those queries (please pardon the word wrap):
mysql> show keys from dirs;
+-------+------------+----------+--------------+-------------+-----------+--
-----------+----------+--------+---------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation |
Cardinality | Sub_part | Packed | Comment |
+-------+------------+----------+--------------+-------------+-----------+--
-----------+----------+--------+---------+
| dirs | 0 | PRIMARY | 1 | id | A |
500 | NULL | NULL | |
+-------+------------+----------+--------------+-------------+-----------+--
-----------+----------+--------+---------+
mysql> show keys from files;
+-------+------------+----------+--------------+-------------+-----------+--
-----------+----------+--------+---------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation |
Cardinality | Sub_part | Packed | Comment |
+-------+------------+----------+--------------+-------------+-----------+--
-----------+----------+--------+---------+
| files | 0 | PRIMARY | 1 | id | A |
5000 | NULL | NULL | |
| files | 1 | date | 1 | date | A |
5000 | NULL | NULL | |
+-------+------------+----------+--------------+-------------+-----------+--
-----------+----------+--------+---------+
Adding an index for dir_id on files did not help (see my other post).
Jordan Russell
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