maria-discuss team mailing list archive

[Vicențiu Ciorbaru <vicentiu@xxxxxxxxxxx>]

Hi Angel!

I suggest you create an index on FACTURACION.ID_USUARIO to start of with.
If that does not solve your performance problem, try creating a multi-part
one on (ID_USUARIO, FECHA).

What surprises me is that r_rows is very small (the number of actual rows
read from the table), but the the query optimizer believed it will read
many more when doing the query plan.

After creating the index, you should see a change in the output of ANALYZE,
where the KEY used is ID_USUARIO.

Hope this helps.

Vicențiu

On Wed, 11 Dec 2019 at 16:50, Ing Angel Cantu <angel.cantu@xxxxxxxxxxxxx>
wrote:

> Hi Vincentiu.
>
> Thanks for your comments, I can't now do the query because exists clients
> using the web app, so I do the query directly on phpmyadmin and this say:
>
> *ANALYZE SELECT * FROM FACTURACION WHERE ID_USUARIO='ndbny' AND
> (TIMBRE_FISCAL!='' OR TIMBRE_FISCAL!='0') AND PAGADA!='1' AND CANCELADO='0'
> AND FECHA BETWEEN '1514764800' AND '1576073257' ORDER BY FECHA DESC LIMIT
> 1,15;*
>
> PHPMyAdmin is in the same server where the mariaDB is running, but the web
> app is in a different server (digital ocean)
>
> Regards !
>
> On 12/11/19 1:12 AM, Vicențiu Ciorbaru wrote:
>
> Hi Angel!
>
> May I suggest you also post the EXPLAIN output for the query that is
> causing problems?
>
> EXPLAIN select * from FACTURACION where ID_USER='ID_HASH' order by
> SERVER_DATE limit 1,12;
>
> It seems like this table is the biggest one you have. If you are running
> MariaDB 10.1 or greater, you can replace ANALYZE with EXPLAIN. This will
> also run the query and show how many rows were scanned compared to the
> expected number of scanned rows, in addition to providing the query plan.
>
> Come back with that information and I might be able to take you in the
> right direction towards fixing this.
>
> Vicențiu
>
>
>
> On Wed, 11 Dec 2019 at 05:32, Ing Angel Cantu <angel.cantu@xxxxxxxxxxxxx>
> wrote:
>
>> Hi.
>>
>> I have problems to make query to a table from the db, is delaying so much
>> (too slow), I don't know whats I need to do, I do some test to my code but
>> is not the problem, is the table.
>>
>> When I make a select to the table marked with red, the response delay 6
>> or 8 seconds, but, if I do a query to  another table the response delay 1
>> second (fast). Only the table marked with red is delaying.
>>
>> I do this specific query:
>>
>> *select * from FACTURACION where ID_USER='ID_HASH' order by SERVER_DATE
>> limit 1,12;*
>>
>>
>> I only query the first 12 results order by date, and in the code I make
>> the pagination using "?page=NUMBER"
>>
>> Regards!
>>
>> --
>> Angel Haniel Cantu Jauregui
>>
>> angel.cantu@moneybox.business <angel.cantu@moneybox.business;>
>>
>> Gerencia | Servicios de Innovacion para Empresas SA de CV
>>
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> --
> Angel Haniel Cantu Jauregui
>
> angel.cantu@moneybox.business <angel.cantu@moneybox.business;>
>
> Gerencia | Servicios de Innovacion para Empresas SA de CV
>
> Proveemos soluciones para facilitar la administración de tu negocio y
> garantizar tus próximas vacaciones en compañia de tu familia sin
> preocupaciones
>
>
>
> (818) 421 9924 <(818)%20421%209924> | (899) 871 1722
> <https://wa.me/528998711722>
> angel.cantu@moneybox.business
> https://www.moneybox.business
> 20 de noviembre #300, CP 88780
> Reynosa, Tamps, Mexico
>
>
>
> [image: facebook] <https://business.facebook.com/moneyboxco/>
> [image: twitter] <https://twitter.com/moneyboxlatam/>
> [image: linkedin] <https://www.linkedin.com/company/27011448/>
> [image: instagram] <https://www.instagram.com/moneyboxlatam/>
>
> <https://www.moneybox.business>
>
>