[jira] [Created] (TRAFODION-2569) Improve handling of index hints

["Hans Zeller (JIRA)" <ji...@apache.org>]

Hans Zeller created TRAFODION-2569:
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             Summary: Improve handling of index hints
                 Key: TRAFODION-2569
                 URL: https://issues.apache.org/jira/browse/TRAFODION-2569
             Project: Apache Trafodion
          Issue Type: Improvement
          Components: sql-cmp
    Affects Versions: 2.0-incubating
            Reporter: Hans Zeller
            Assignee: Hans Zeller
             Fix For: 2.2-incubating


We allow index hints of this form:

select ... from table1 <<+index TRAFODION.SCH.IX1>> ...

In many cases, the compiler does not choose the index specified in the hint, however. A few improvements I am planning to do, if I can pull it off:

* if we need an index join, make sure we get it using this index
* allow hints in update statements
* bind the names in the hint, so they don't have to be specified as upper-case 3-part names.
* issue a warning if the table name in the index does not specify an index



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