Your mysql db is only using 496Mb of ram? i have a server with 1GB ram
where mysql uses more mem than yours does - you should probably tune
your server system variables a bit to utilize your memory better.
Christian Hammers wrote:
On Tue, Aug 22, 2006 at 10:20:47AM -0600, Michael Loftis
Have you considered reading up on basic database management?
There are plenty of good material on the web for you to read where you
can actually learn how to manage databases, so you don't have to ask
others about every single detail.
Ratheesh K J wrote:
Hello all,
Another question on
You could add an extra field called last_login_date which you'd set only
once per session - at login time. At login time you'd set this to the
value that exists in login_date. Then use that for comparison against
created_on.
Daevid Vincent wrote:
I have a SQL challenge I'm not sure how to
If i was you i'd start reading the manual. Look under the optimization
chapter. Also, brush up on database normalization and look into how
exactly the tables are being used - run explains on the sql statements
that are used with the tables and see how you can optimize index usage.
Ratheesh K
, Martin Jespersen [EMAIL PROTECTED] wrote:
Looks like drupal had an error when doing the backup - mysql is
complaining over the fact that your backup.sql file contains a html
formated fatal error message.
Kaushal Shriyan wrote:
Hi ALL
I have taken backup of http://mydomain.com/?q=admin/database
select g.GROUP_NAME, count(mg.MEM_ID) as NUMBER_OF_MEMBERS from GROUPS g
left join MEM_GRO mg using(GRO_ID) group by g.GRO_ID
John Meyer wrote:
I have two tables:
MEMBERS:
MEM_ID
...
GROUPS:
GRO_ID:
...
And one joiner
MEM_GRO:
MEM_ID, GRO_ID
I want to print out a list like this
You can tune the fulltext search in a few ways using the config, try
read up on the various server variables that has to do with fulltext
indexing. Other than that there is always the option of upgrading the
hardware :)
[EMAIL PROTECTED] wrote:
Hi!
I'm getting a lot of pushback on using
It depends what you need and how your data looks.
Say you have a table with 4 columns:
col1 has 1000 dictinct values
col2 has 1 dictinct values
col3 has 100 dictinct values
col4 has 10 dictinct values
In this case:
select col1,col2 from tbl where col1=... and col2=...
Having a single
Looks like drupal had an error when doing the backup - mysql is
complaining over the fact that your backup.sql file contains a html
formated fatal error message.
Kaushal Shriyan wrote:
Hi ALL
I have taken backup of http://mydomain.com/?q=admin/database through
drupal 4.6.3 by selecting all
I just ran the following sql (on mysql 4.1.20):
update tbl set col1=col2, col2=col1
To my surprise, mysql updates col1 via col1=col2 before reading it for
use in col2=col1, so I end up with the same value in both columns,
which, of course, was not my intention. Thinking about it, this
it's a frequent operation based on a where clause
Barry Newton wrote:
At 06:35 PM 8/1/2006, Martin Jespersen wrote:
I just ran the following sql (on mysql 4.1.20):
update tbl set col1=col2, col2=col1
To my surprise, mysql updates col1 via col1=col2 before reading it for
use in col2=col1
Do the right thing(TM) and don't use an alias that is the same as a
field that exists (this was mentioned before by someone else).
Since there is a field in your join named fee, using fee as an
alias, is bound to cause your trouble.
Also, trying to call sum(p.fee) twice is a waste of cputime. I
Try to run an explain on the query to see how mysql optimizes it.
Also have a look at your system resources while the query runs to see if
you have a problem with memory/swapping.
I am not sure (since i've never used union), but my guess is that mysql
uses temporary tables for this, so maybe
read the manual: http://dev.mysql.com/doc/refman/5.0/en/optimize-table.html
Jesse wrote:
Seeing posts about mysqlcheck on the list prompted me to check out that
utility. A lot of it I can see is very useful, and I understand what it
does. However, what does the optimize command mean? What
I doubt apache is to blame. 5 seconds for a query on a website is
extremely slow, so if that is your normal results, then you have a
problem there already. I've been building database driven websites for
around 11 years and i don't think i can remember a single time i went
into production with
Looks like more of a php question that a mysql question ;)
anyway, the mysql part:
use either an unsigned interger (tinyint, if less than 256
possibilities, smallint if over 256 but less than 65565, etc)
or use a set or enum.
Using a varchar is not really the way to go.
If you choose to
Ratheesh K J wrote:
Hello All,
I run a select query to see its speed. It took around 5 seconds. Now i run the
same query simultaneously twice usng two instances of the client tool. It took
10 seconds for both the queris to complete. Its not 5 secs + 5 secs. Both the
queries were running
Depending on the size of your table, it can be faster using
SELECT lastname FROM employee WHERE lastname BETWEEN 'm' AND 'z' GROUP
BY lastname;
On a table with 2,5 Mill. records the speed diff is over 1000% on my system.
ViSolve DB Team wrote:
Hello Paul,
You can try this:
SELECT
As mentioned before you really should sue the date data type in mysql,
or alternativly use an int and store the date as seconds since the epox,
so that you can do simple math for this type of query. Any other way of
storing dates is basically shooting yourself in the foot.
That said, if you
You can usually find the database files under the var subdirectory
under your installation, unless another datadir was specified at
compiletime.
;) Martin
Joko Siswanto wrote:
Dear All
if myqsl service can't start, where can i found the file and back up it?
[under windows and linux]
As long as backticks are used around fieldnames, spaces and/or reserved
words are fine, tho it does tend to create more work for the user ;)
mos wrote:
At 12:02 PM 7/20/2006, you wrote:
I've got a table of people who registered for a convention. Each
person has a registration date, kept in a
Using dumps are almost always the way to go, upgrading the datafiles
themselves is something you should avoid unless you are into heavy
wizardry and/or pain.
Dan Trainor wrote:
Martin Jespersen wrote:
Dan has a very good point, be mindfull of the changed password
algorithm, that actually
I recently upgraded from 3.23.58 - 4.1.20 without any hickups.
I simply dumped my databases with mysqldump on the 3.23.58 installation
and imported them again from inside the mysql client by using the
source command.
Dan Trainor wrote:
Hi -
I know we've rolled this around the list a few
that
came about with 4.1.
Dan
On 7/13/06, Martin Jespersen [EMAIL PROTECTED] wrote:
I recently upgraded from 3.23.58 - 4.1.20 without any hickups.
I simply dumped my databases with mysqldump on the 3.23.58 installation
and imported them again from inside the mysql client by using the
source
1: .sql files are usually textfiles with sql statements in them
delimited by ;
2: do the following
1) start the client - /path/to/mysql -u user -ppass
2) select your database (if nescessary) - use db
3) import the sql file - source /path/to/fill_help_tables.sql
[EMAIL PROTECTED] wrote:
the maintable instead of a seperate table so i can
avoid slow joins.
what will be better for queryspeed/size: adding them with NULL using
NULL as default or with NOT NULL using 0 and '' as defaults?
Regards
Martin Jespersen
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Jesse wrote:
my editor forces a hard line break at column position 16384, which, of course, corrupts
the restore. I don't know if there are other text editors that will not do this,
Funny, i've never seen one that does? What system/editor are you using?
or even better, if there is a way
Jesse wrote:
Funny, i've never seen one that does? What system/editor are you using?
Multi-Edit version 8.0i. This is an older version of the editor. Maybe
a newer one wouldn't, but for the most part, it does a very good job for
me.
Ok never heard of multiedit... if your system is
Maybe something like this:
select ft.topic, fm.message from forums_topics ft, forums_messages fm
match (ft.topic, fm.message) against (...)
if topic is null then the hit is from fm and vice versa... haven't tried
it, so might not work :)
Steffan A. Cline wrote:
I have 2 tables which have
that need a string
search?
Dan
On 6/28/06, Martin Jespersen [EMAIL PROTECTED] wrote:
I was too fast there it seems
fulltext searches doesn't help after all since i can't use leading
wildcards to words :(
too bad i loved the speed :/
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read_rnd_buffer (32M) and sort_buffer (32M) but this
query is still slow as hell...
Any hints as to how i can optimize the query? or tune my server settings
to produce faster results?
Regards
Martin Jespersen
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MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
significantly. Date,
type of document, author, etc. Even if it were an optional criteria
for people it might speed up at least some of the searches.
Dan
On 6/28/06, Martin Jespersen [EMAIL PROTECTED] wrote:
Hey all i am running mysql 4.1.20.
I have a table with about 2.5 million records and i
I was too fast there it seems
fulltext searches doesn't help after all since i can't use leading
wildcards to words :(
too bad i loved the speed :/
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functions, even tho /usr/bin/as is in the path.
anyone have any idea why?
Regards
Martin Jespersen
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--no-data should do the trick, try to do mysqldump --help and read the
output
Xiaobo Chen wrote:
Hi, all
If I use 'mysqldump', I will get the script to create the tables and those
'insert' statements to insert the data.
I am wondering if I just want the first part, i.e, the script to create
Martin Jespersen
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pm, Martin Jespersen wrote:
./configure --prefix=/opt/.mysql-4.1.20 --enable-assembler
--enable-thread-safe-client --enable-static=all --with-gnu-ld
--with-mysqld-user=mysql --without-debug
--with-client-ldflags=-all-static --with-mysqld-ldflags=-all-static
--with-charset=latin1 --with-collation
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