On 2012/05/24 04:10, Yu Watanabe wrote:
2. Instead INDEXes and schema design must be studied. Please provide:
SHOW CREATE TABLE
| thold_data | CREATE TABLE `thold_data` (
`id` int(11) NOT NULL auto_increment,
`rra_id` int(11) NOT NULL default '0',
`data_id` int(11) NOT NULL
On 2012/05/24 07:37, Alex Schaft wrote:
You are selecting a record based on the value of data_id and
thold_enabled, but don't have an index on either? Add an index for both.
If data_id is unique, then you would only need an index on that.
Alex
On second thought, an index on thold_enabled
On 2012/05/07 10:53, Zhangzhigang wrote:
johan
Plain and simple: the indices get updated after every insert statement,
whereas if you only create the index *after* the inserts, the index gets
created in a single operation, which is a lot more efficient..
Ok, Creating the index *after*
I suppose an easier way is to have a getrow function, Something like
while ($row = getrow($RS) {
.
.
.
}
function getrow($RS)
{
if ($current_server_is_mysql)
{
return mysql_fetch_assoc($RS);
}
else
Hi,
I need to update a table along the lines of the following
update table set LastUpdate=now(), UpdateSource='Abc' Where Key1 = 'Def'
and Key2 = 'ghi'
I need to possible do anywhere from 2 to 20 of these. Would it be better
to call an update statement for each of these,
or should I do a
On 2/14/2012 10:30 AM, cars...@bitbybit.dk wrote:
On 14.02.2012 10:20, Alex Schaft wrote:
Hi,
I need to update a table along the lines of the following
update table set LastUpdate=now(), UpdateSource='Abc' Where Key1 = 'Def'
and Key2 = 'ghi'
I need to possible do anywhere from 2 to 20
On 2012/02/09 01:40 PM, Johan De Meersman wrote:
- Original Message -
From: Alex Schaftal...@quicksoftware.co.za
If I were to do a select count(*) from x where y prior to doing
select * from x where y to get a number of records, how would this impact
performance on the server itself?
Hi,
I'm currently using mysql_store_result to retrieve all records of a
query. This poses a problem however if say a couple of thousand records
get returned, and the user gets no feedback during the progress. I now
want to change this to mysql_use_result. The only catch is that you
don't
On 2011/10/21 10:26 AM, Johan De Meersman wrote:
- Original Message -
From: Alex Schaftal...@quicksoftware.co.za
Got my app reading in a dump created with extended-inserts off, and
lumping all of the insert statements together. Works like a charm
Just for laughs, would you mind
On 2011/10/20 03:43 PM, Johan De Meersman wrote:
- Original Message -
From: Alex Schaftal...@quicksoftware.co.za
I realize that, I'm just trying to stop the phone calls saying I
started a restore, and my pc just froze
I might just read all the single insert lines, and get a whole
Hi,
I'm monitoring a mysqldump via stdout, catching the create table
commands prior to flushing them to my own text file. Then on the restore
side, I'm trying to feed these to mysql via the c api so I can monitor
progress (no of lines in the dump file vs no of lines sent to mysql),
but the
On 2011/10/20 10:53 AM, Alex Schaft wrote:
What can I pass to mysqldump to get more sane statement lengths?
+1 for extended-inserts...
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On 2011/10/20 11:54 AM, Johan De Meersman wrote:
- Original Message -
From: Alex Schaftal...@quicksoftware.co.za
I'm monitoring a mysqldump via stdout, catching the create table
commands prior to flushing them to my own text file. Then on the
restore side, I'm trying to feed these to
If you have a table with columns A B, and might do a where on A or B,
or an order by A, B, would single column indexes on A and B suffice or
would performance on the order by query be improved by an index on A,B?
Thanks
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On 2011/10/11 02:22 PM, Rik Wasmus wrote:
Just to clarify having key indexes of (a,b) or (b,a) have no difference ?
They DO.
See it as lookup table which starts with 'a' in the first case, and 'b' in the
second one. Looking for anything that matches 'b' for an index (a,b) requires
a full scan
On 2011/10/11 02:30 PM, Alex Schaft wrote:
On 2011/10/11 02:22 PM, Rik Wasmus wrote:
Just to clarify having key indexes of (a,b) or (b,a) have no
difference ?
They DO.
See it as lookup table which starts with 'a' in the first case, and
'b' in the
second one. Looking for anything
Hi,
We're busy moving legacy apps from foxpro tables to mysql. User logins
were tracked via a record in a table which the app then locked,
preventing multiple logins for the same user code.
I want to simulate this via a locked column in a mysql table, but
would need the field to be cleared
On 2011/07/19 09:52 PM, andrewmchor...@cox.net wrote:
Hello
I am about to create a database in mysql. I would like to be able to import
some dbase3 (.dbf) files into the tables I will be defining. What is the
easiest way to import the table. Is there software that can be downloaded that
will
Hi,
I'm busy creating an index on a 518505 record table on a single column
which is now taking about 2 hours on the copy to tmp table process
The server is a 2gig ram Intel(R) Xeon(TM) CPU 3.00GHz running on a
hardware raid 5. The inno config was left as a standard install from
my-medium
Hi,
I'm sure this must've been done before, so if someone can point me at a
discussion or assist me in some other way I'd appreciate it.
If I'm browsing a paged list of invoices say in numerical order and I
then want to reposition the list on a certain client, I can do a second
query to the
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