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https://issues.apache.org/jira/browse/TRAFODION-3273?focusedWorklogId=198220&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-198220
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ASF GitHub Bot logged work on TRAFODION-3273:
---------------------------------------------
Author: ASF GitHub Bot
Created on: 13/Feb/19 17:12
Start Date: 13/Feb/19 17:12
Worklog Time Spent: 10m
Work Description: DaveBirdsall commented on pull request #1794:
[TRAFODION-3273] Avoid going off the end of wide output descriptor
URL: https://github.com/apache/trafodion/pull/1794
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Issue Time Tracking
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Worklog Id: (was: 198220)
Time Spent: 1h (was: 50m)
> Cli can go off the end of a wide descriptor
> -------------------------------------------
>
> Key: TRAFODION-3273
> URL: https://issues.apache.org/jira/browse/TRAFODION-3273
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-exe
> Affects Versions: 2.4
> Reporter: David Wayne Birdsall
> Assignee: David Wayne Birdsall
> Priority: Major
> Time Spent: 1h
> Remaining Estimate: 0h
>
> The Trafodion CLI (Call Level Interface) supports two styles of descriptors,
> "wide" and "non-wide". Non-wide is sufficient for all SQL statements except
> the CALL statement. For such statements, the set of input and output columns
> is fixed by the semantics of the statement and therefore is known exactly at
> compile time.
> For non-wide descriptors, method InputOutputExpr::outputValues
> (cli/CliExpExchange.cpp) checks to see if the output descriptor entry count
> matches the statement output column count, and raises an 8893 error if they
> do not match.
> Wide descriptors on the other hand are permitted to be wider than the number
> of statement columns. This is needed for CALL statements; stored procedures
> are permitted to produce result sets of arbitrary kinds and sizes that are
> not known at compile time.
> Trafodion ODBC and JDBC (via the mxosrvr process) use wide descriptors all
> the time.
> If we happen to have more statement output columns than there are output
> descriptor entries, and we are using a wide descriptor, method
> InputOutputExpr::outputValues will go off the end of the output descriptor,
> with unpredictable results. We may get an error; we may core.
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