[
https://issues.apache.org/jira/browse/DERBY-4116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kathey Marsden updated DERBY-4116:
----------------------------------
Derby Info: [Patch Available]
Attached is an updated patch for this issue. This patch will not update the
store estimated row count if no index scan was performed.
I tried to add a test to UpdateStatisticsTest to verify this, but ran into some
trouble because the estimated row counts we get back from runtime statistics do
not return this information directly. I did manually verify that we do not go
thre setEstimatedRowCount for update statistics on a table with no index.
Regarding the use of internal interfaces in checkEstimatedRowCount, Myrna
suggested that I clobber and build and make sure there were no build order
issues and also that I make sure derbyTesting.jar didn't pick up the product
classes. I checked both and the change seems ok from a build perspective.
I ran SelectivityTest and UpdateStatisticsTest and am running tests now but
don't anticipate any problems since they don't exercise this code. Please
review.
> SYSCS_UTIL.SYSCS_UPDATE_STATISTICS should update the store estimated row
> count for the table
> --------------------------------------------------------------------------------------------
>
> Key: DERBY-4116
> URL: https://issues.apache.org/jira/browse/DERBY-4116
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.5.1.0, 10.6.0.0
> Reporter: Kathey Marsden
> Assignee: Kathey Marsden
> Attachments: derby-4116_diff.txt, derby-4116_diff2.txt
>
>
> When SYSCS_UTIL.SYSCS_UPDATE_STATISTICS is run, it doesn't update the store
> estimated row count. The program oldSelectivity.java attached to DERBY-3955
> shows that the statistics are not updated.
> See discussions in DERBY-3955
> https://issues.apache.org/jira/browse/DERBY-3955?focusedCommentId=12688789&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12688789
> https://issues.apache.org/jira/browse/DERBY-3955?focusedCommentId=12688813&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12688813
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
