Alan Brown napsal(a):
> On Tue, 9 Jan 2007, Ondrej PLANKA wrote:
>
>>> It sounds silly, but add individual indexes for JobId, PathId and
>>> FilnameId as well as the 3-way one.
>>>
>> Ok, do you have some tip, how can I add individual indexes? Because I
>> think, my indexes are OK or not?
>
> ALTER TABLE File ADD INDEX [name] {column} ;
>
> so...
>
> ALTER TABLE File ADD INDEX file_jobid_idx JobId ;
> ALTER TABLE File ADD INDEX file_pathid_idx PathId ;
> ALTER TABLE File ADD INDEX file_filenameid_idx FilenameId ;
>
I really done this individual indexes, but building directory tree for
Jobs are still very slowly.....
It is not possible :(
Now my indexes of table File are >>>
+-------+------------+---------------------+--------------+-------------+-----------+-------------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name
| Collation | Cardinality |
+-------+------------+---------------------+--------------+-------------+-----------+-------------+
| File | 0 | PRIMARY | 1 | FileId
| A | 13726696 |
| File | 1 | JobId | 1 | JobId
| A | 18 |
| File | 1 | JobId_2 | 1 | JobId
| A | 18 |
| File | 1 | JobId_2 | 2 | PathId
| A | 13726696 |
| File | 1 | JobId_2 | 3 | FilenameId
| A | 13726696 |
| File | 1 | file_jobid_idx | 1 | JobId
| A | 18 |
| File | 1 | file_pathid_idx | 1 | PathId
| A | 807452 |
| File | 1 | file_filenameid_idx | 1 | FilenameId
| A | 4575565 |
+-------+------------+---------------------+--------------+-------------+-----------+-------------+
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