db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Closed: (DERBY-4605) Derby Cost Based Optimizer to force the use of index
Date Thu, 01 Apr 2010 08:19:27 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Knut Anders Hatlen closed DERBY-4605.
-------------------------------------

    Resolution: Invalid

> Derby Cost Based Optimizer to force the use of index
> ----------------------------------------------------
>
>                 Key: DERBY-4605
>                 URL: https://issues.apache.org/jira/browse/DERBY-4605
>             Project: Derby
>          Issue Type: Task
>          Components: Demos/Scripts
>    Affects Versions: 10.5.3.0
>            Reporter: Mamatha K.V
>            Priority: Minor
>             Fix For: 10.5.3.0
>
>
> Hello,
> Please help on the syntax of using Cost Based Optimizer that I am using.
> SELECT count (REPOSITORY_KEY) from TIDLRREP --derby-properties index = TIILRREP where
REPOSITORY_KEY like 'S%';
> Column name- REPOSITORY_KEY
> Table - TIDLRREP
> Index name - TIILRREP
> Also tried using - DERBY-PROPERTIES
> When I through a file using java org.apache.derby.tools.ij C:\mysql.sql > C:\GLS\myoutput.txt
> Derby Database Version : db-derby-10.5.3.0-bin
> mysql.sql file contains
> connect 'jdbc:derby:D:\test\PerformanceTest;user=admin;password=password';
> MaximumDisplayWidth 9999;
> CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1);
> CALL SYSCS_UTIL.SYSCS_SET_STATISTICS_TIMING(1);
> SELECT count(REPOSITORY_KEY) from TIDLRREP --derby-properties index = TIILRREP where
REPOSITORY_KEY like 'S%';
> Error output in myoutput.txt
> ij version 10.5
> ij> connect 'jdbc:derby:D:\test\PerformanceTest;user=admin;password=password';
> ij> MaximumDisplayWidth 9999;
> ij> CALL SYSCS_UTIL.SYSCS_SET_RUNTIMESTATISTICS(1);
> 0 rows inserted/updated/deleted
> ij> CALL SYSCS_UTIL.SYSCS_SET_STATISTICS_TIMING(1);
> 0 rows inserted/updated/deleted
> ij> SELECT count(REPOSITORY_KEY) from TIDLRREP --derby-properties index = TIILRREP
where REPOSITORY_KEY like 'S%';;
> ERROR 42Y46: Invalid Properties list in FROM list.  There is no index 'TIILRREP WHERE
REPOSITORY_KEY LIKE 'S%';' on table 'TIDLRREP'.
> ij>
> Also I have added  below entries in my derby.properties file
>  
> derby.language.logQueryPlan=true
> derby.optimizer.noTimeout=true
> When I directly the query on ij ... it just hangs!!
> Any help is appreciated.
> Thanks
> Mamatha

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message