[jira] [Updated] (IGNITE-3453) Query engine picks incorrect index in certain configurations.

["Vladimir Ozerov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-3453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Ozerov updated IGNITE-3453:
------------------------------------
    Labels: sql-performance  (was: performance)

> Query engine picks incorrect index in certain configurations.
> -------------------------------------------------------------
>
>                 Key: IGNITE-3453
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3453
>             Project: Ignite
>          Issue Type: Bug
>          Components: sql
>            Reporter: Alexei Scherbakov
>            Priority: Major
>              Labels: sql-performance
>         Attachments: Example.java
>
>
> Index selection depends on index name ordering, not the argument type.
> Index 1 (name idx_1):
> countryId:Integer, regionId:Integer, cityId:Integer
> Index 2 (name idx_0):
> countryId:Integer, regionId:Integer, nation:String
> For query:
> select id, countryId, cityId from Person where countryId=? and regionId=? and cityId=? params 1,1,1
> the index 2 is picked incorrectly and only two first fields are used.
> See full reproducer in the attachment.



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