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From "Satheesh Bandaram (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-364) Provide a more helpful message when the incorrect column name is given in a SELECT statement for a VTI
Date Wed, 15 Jun 2005 02:01:47 GMT
    [ http://issues.apache.org/jira/browse/DERBY-364?page=comments#action_12313671 ] 

Satheesh Bandaram commented on DERBY-364:
-----------------------------------------

This is one of the reasons VTIs are not good to be exposed through SQL as it is. Not only
the syntax is non-standard, don't believe the mechanism has been tested as good as regular
tables. VTIs are still very useful as internal mechanism.

> Provide a more helpful message when the incorrect column name is given in a SELECT statement
for a VTI
> ------------------------------------------------------------------------------------------------------
>
>          Key: DERBY-364
>          URL: http://issues.apache.org/jira/browse/DERBY-364
>      Project: Derby
>         Type: Improvement
>   Components: SQL
>     Versions: 10.0.2.1, 10.0.2.0, 10.1.0.0
>     Reporter: David Van Couvering
>     Priority: Trivial

>
> If you specify a column name incorrectly in a SELECT statement from a VTI, you get a
fairly unhelpful error message 
> ij> SELECT SQLSTATE FROM new org.apache.derby.diag.ErrorMessages() vti;
> ERROR 42X01: Syntax error: Encountered "SQLSTATE" at line 1, column 8.
> ij> SELECT SQL_STATE  FROM new org.apache.derby.diag.ErrorMessages() vti;
> -- list of SQL States returned --
> If you do the same thing from a regular table, the error message is much more clear:
> ij> create table foo(id integer);
> 0 rows inserted/updated/deleted
> ij> select ixd from foo;
> ERROR 42X04: Column 'IXD' is either not in any table in the FROM list or appears
>  within a join specification and is outside the scope of the join specification
> or appears in a HAVING clause and is not in the GROUP BY list. If this is a CREA
> TE or ALTER TABLE  statement then 'IXD' is not a column in the target table.

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