Kim Haase created DERBY-6653:
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Summary: Data type limitations on indexes should be in Reference
Manual
Key: DERBY-6653
URL: https://issues.apache.org/jira/browse/DERBY-6653
Project: Derby
Issue Type: Bug
Components: Documentation
Affects Versions: 10.11.0.0
Reporter: Kim Haase
Assignee: Kim Haase
Priority: Minor
The Tuning Guide topic "Create useful indexes"
(http://db.apache.org/derby/docs/10.10/tuning/ctundepth1002853.html) has the
following excessively vague note at the end:
"Note: Derby does not support indexing on columns with data types like BLOB,
CLOB, and XML."
The topic also has a cross-reference to the "CREATE INDEX statement" topic in
the Derby Reference Manual, but that topic says nothing about data type
limitations for index columns.
In an email exchange, Knut says that LONG VARCHAR and user-defined types should
be added to make the list complete, but he also suggests moving this
information from the tuning guide to the "CREATE INDEX statement" topic in the
Reference Manual, since we already reference that topic and since the
information needs to be there.
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