maria-discuss team mailing list archive

[Roberto Spadim <roberto@xxxxxxxxxxxxx>]

Hi Daniel!

2014-12-01 20:07 GMT-02:00 Daniel Black <daniel.black@xxxxxxxxxxxxx>:

>
>
> ----- Original Message -----
> > Hi Jocelyn! :)
> >
> > 2014-12-01 10:57 GMT-02:00 jocelyn fournier < jocelyn.fournier@xxxxxxxxx
> > :
> >
> >
> > Hi Roberto,
> >
> > What are the cardinalities of the index in this table ? (SHOW INDEXES
> FROM
> > est_mov).
> > well i executed optimize and analyze before select...
>
> > i will explain more about the problem...
>
> How novel. Except you didn't provided the asked for information.
>

ops! that's the myisam output of show index from table

|| *Table* || *Non_unique* || *Key_name* || *Seq_in_index* || *Column_name*
|| *Collation* || *Cardinality* || *Sub_part* || *Packed* || *Null* ||
*Index_type* || *Comment* || *Index_comment* ||
|| est_mov_myisam || 1 || rendimento || 1 || rendimento || A || 3 ||  ||
 ||  || BTREE ||  ||  ||
|| est_mov_myisam || 1 || rendimento || 2 || lote_rendimento_data || A ||
6078 ||  ||  ||  || BTREE ||  ||  ||
|| est_mov_myisam || 1 || rendimento || 3 || item_id_red || A || 832974 ||
 ||  ||  || BTREE ||  ||  ||

|| est_mov_myisam || 1 || item || 1 || item_id || A || 10 ||  ||  ||  ||
BTREE ||  ||  ||
|| est_mov_myisam || 1 || item || 2 || item_id_red || A || 8786 ||  ||  ||
 || BTREE ||  ||  ||
|| est_mov_myisam || 1 || item || 3 || data_estoque || A || 14577050 ||  ||
 ||  || BTREE ||  ||  ||


>
> > i was using mariadb 10.0.5 (or 10.0.12 i don't remember now), and
> optimizer
> > was using the right index ("rendimento"), after upgrading to 10.0.14 and
> > 10.0.15, optimizer is using "item" index, the result is a slower query
> (it's
> > a problem, but it's not related with my doubt...)
>
> Could also be related to https://mariadb.atlassian.net/browse/MDEV-7084

it was 10.0.12


>
>
> --
> --
> Daniel Black, Engineer @ Open Query (http://openquery.com.au)
> Remote expertise & maintenance for MySQL/MariaDB server environments.
>
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-- 
Roberto Spadim
SPAEmpresarial
Eng. Automação e Controle