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https://issues.apache.org/jira/browse/TRAFODION-2575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Wayne Birdsall resolved TRAFODION-2575.
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Resolution: Fixed
Fix Version/s: 2.2-incubating
> UPDATE STATS sometimes fails on very long varchars
> --------------------------------------------------
>
> Key: TRAFODION-2575
> URL: https://issues.apache.org/jira/browse/TRAFODION-2575
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-cmp
> Affects Versions: 2.2-incubating
> Reporter: David Wayne Birdsall
> Assignee: David Wayne Birdsall
> Fix For: 2.2-incubating
>
>
> One symptom is observing 6003 or 6004 warnings after UPDATE STATISTICS is
> done. That is, UPDATE STATISTICS seems to succeed, but when repeated it fails
> with an error 9200, and 6003 or 6004 warnings. These warnings indicate that
> the histogram interval values are not in order. In one example that I
> debugged, the problem was that we used a SELECT statement to compute
> aggregates on the column, and the plan for that SELECT statement did not sort
> the results, even though an ORDER BY was specified. While debugging that, I
> ran into several other issues with sorts on long varchars. Concluding that
> the engine is simply not up to prime-time for such sorts (and seeing that
> such sorts are unneeded anyway), I plan to change UPDATE STATISTICS to first
> truncate the string to a shorter length and then generate the SELECT.
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