speculation though. (If only a MySQL developer could clarify
this... ;)
Jordan Russell
-
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/ (the list archive)
To re
++-+
Adding an index for dir_id on files did not help (see my other post).
Jordan Russell
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Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/
T 1;
But it actually made this query slower -- 0.07 sec instead of 0.03!
SELECT files.id, dirs.name FROM files, dirs where files.dir_id=dirs.id
ORDER BY files.date DESC LIMIT 1;
Jordan Russell
-
Before posting, please
files.date DESC LIMIT 1;
And I tried reversing the column/table order; that didn't help either:
SELECT dirs.name, files.id FROM dirs, files where dirs.id=files.dir_id ORDER
BY files.date DESC LIMIT 1;
Jordan Russell
-
B
ESC LIMIT 1;
SELECT name FROM dirs WHERE id=;
Later I want to use a LIMIT of 100 or more so I don't think using the
multiple queries will be an option then...
Jordan Russell
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Before posting, please check:
http:/
> You have no where clause, so no index is used.
Oops, missed this part.
Where exactly do I need a WHERE clause, and for what? The first query
doesn't have a WHERE clause and yet it appears to be using the "date" inde
where the time does add
up...
My real question is, why does MySQL not use any index to sort when LEFT JOIN
is used. (Refer to the EXPLAIN SELECT output at the end of my message.)
Jordan Russell
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Before posting, please check
NULL|NULL | NULL | 5000 |
Using filesort |
| dirs | eq_ref | PRIMARY | PRIMARY | 4 | files.dir_id |1 |
|
+---++-------+-+-+--+--+
+
Thanks very much in advance for any assistance.
Jordan Russell
---
piece of the old server
was still running(?). I didn't ensure the old server was stopped before I
upgraded the RPM...
Jordan Russell
-
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
htt
lem anymore. :/ I was
getting it very frequently yesterday (on almost every try). I'm not sure
what has changed since then. I'll let you know if the problem happens again
and try to narrow down the exact steps to reproduce.
Jordan Russell
-
ll of the latest RedHat
updates installed, if that makes any difference.
Jordan Russell
-
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/ (the list archive)
T
arted
Same thing works fine in 3.23.33 (I've gone back and checked).
Jordan Russell
-
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/ (the list archive)
To
read reports of similar-sounding problems in the mailing list archive, but I
can't seem to find a working solution...
Thanks.
Jordan Russell
-
Before posting, please check:
http://www.mysql.com/manual.php (the manua
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