Hi,
MySQL can use a single index in a query as you've seen in the result of
explain.
Of course it is better to have an index made of 2 or more columns because it
will match better the query.
But if I remember well, the in() function can't use an index.
And I think it also can't use an index
C3P0 connection does, indeed work well on remote machines.. In fact,
I only deploy it locally on dev servers. My production systems all
use c3p0 on remote servers.
Again, if you can connect from the command line of your client machine
to the server *via TCP* with the same credentials as your Dat
Thank you all for the help and info! This error happened because I started
MySQL with -bind-address=91.203.57.207; even if Softslate is given the
proper IP address and port number is fails on connection pooling. I fixed
the problem by setting the MySQL IP address to 127.0.0.1.
I am thinking th
Hi Bryan, all!
Bryan Cantwell wrote:
> Is there a benefit to a combined index on a table? Or is multiple single
> column indexes better?
This is a FAQ, but I'm not aware of a place to point you for the answer.
>
> If I have table 'foo' with columns a, b, and c. I will have a query
> like:
> se
The more information, the easiest to pinpoint solutions.
delete all client and administrativ tools (mysql, mysqladmin, etc from the
"server", since you aren't doing any transactions, I think you can ditch all
engines excepto the isam/myisam, the basic one, also you migth want to leave
memory engin
On Tue, Jul 6, 2010 at 7:10 PM, mos wrote:
> Roam,
> Why are you installing a client server database on an embedded
> system? There are better databases for this task. In the past I've been able
> to squeeze a Windows application and an SQL database so it could run
> directly off of a flopp
On Tue, Jul 6, 2010 at 2:00 PM, Joerg Bruehe wrote:
> Hi!
>
>
> Nima Mohammadi wrote:
> > On Mon, Jul 5, 2010 at 8:26 PM, Rob Wultsch wrote:
> >
> >> [[...]]
> >>
> >> You probably want to compile your own version of MySQL. You probably
> >> want to remove debugging symbols* (which have been pre
Is there a benefit to a combined index on a table? Or is multiple single
column indexes better?
If I have table 'foo' with columns a, b, and c. I will have a query
like:
select c from foo where a in (1,2,3) and b < 12345;
Is index on a,b better in any way than an a index and a b index?
An explain
Hi Joerg,
Thanks for your reply.
I found out that this error was limitation row length of 8000 bytes on
InnoDB. I have check the dump sql file and one particular table is causing
error 139.
What I did is just to use MyISAM engine rather than InnoDB for a specific
table only.
BTW, the machine ha
Roam,
Why are you installing a client server database on an embedded
system? There are better databases for this task. In the past I've been
able to squeeze a Windows application and an SQL database so it could run
directly off of a floppy disk (remember those?). But it wasn't client
se
Hi!
Nima Mohammadi wrote:
> On Mon, Jul 5, 2010 at 8:26 PM, Rob Wultsch wrote:
>
>> [[...]]
>>
>> You probably want to compile your own version of MySQL. You probably
>> want to remove debugging symbols* (which have been present since the
>> mid 5.0 series, iirc), and any engines/character sets
James, all,
James Corteciano wrote:
> Hi All,
>
> I have received error message "ERROR 1030 (HY000) at line 167: Got error 139
> from storage engine" when importing dump database to MySQL server. The MySQL
> server is using InnoDB. I have google it and it's something problem on
> exceeding
> a r
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