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https://issues.apache.org/jira/browse/DERBY-4369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen updated DERBY-4369:
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Issue & fix info: (was: [Release Note Needed])
Fix Version/s: (was: 10.6.0.0)
Removed fix-version and release note needed since the fix was backed out.
> Give a more useful error message when join specification is missing
> -------------------------------------------------------------------
>
> Key: DERBY-4369
> URL: https://issues.apache.org/jira/browse/DERBY-4369
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 10.6.0.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Priority: Minor
> Attachments: derby-4369-1a.diff, releaseNote.html
>
>
> Currently, if a join is missing a join specification, we see the following
> rather cryptic message:
> ij> select * from t1 join t2;
> ERROR 42X01: Syntax error: Encountered "<EOF>" at line 1, column 24.
> Issue the 'help' command for general information on IJ command syntax.
> Any unrecognized commands are treated as potential SQL commands and executed
> directly.
> Consult your DBMS server reference documentation for details of the SQL
> syntax supported by your server.
> The parser already has code to check if the join specification is missing,
> but since the join specification is required in the grammar, we'll never get
> to that point in the code if it is missing. If we make the join specification
> optional in the grammar, the code path with the more helpful message will be
> enabled, and we'll see this instead:
> ij> select * from t1 join t2;
> ERROR 42Y11: A join specification is required with the 'INNER JOIN' clause.
> This will make it clearer what the problem is.
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