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Date: Thu, 2 Dec 2004 08:44:37 -0800 (PST)
From: "Daniel John Debrunner (JIRA)" <derby-dev@db.apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-13) Quoted names with embedded period
 mishandled in from list
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     [ http://nagoya.apache.org/jira/browse/DERBY-13?page=comments#action_56109 ]
     
Daniel John Debrunner commented on DERBY-13:
--------------------------------------------

Rather than inventing a new way, the exposed table name should be a TableName rather than a simple String. (org.apache.derby.impl.sql.compile.TableName). Some of the query nodes already have a method TableName getExposedTableName(), all instances and uses of String getExposedName() should be changed to TableName getExposedTableName().

The change is probably a little more involved than that, but that should be the general idea.

> Quoted names with embedded period mishandled in from list
> ---------------------------------------------------------
>
>          Key: DERBY-13
>          URL: http://nagoya.apache.org/jira/browse/DERBY-13
>      Project: Derby
>         Type: Bug
>   Components: SQL
>     Versions: 10.0.2.0
>     Reporter: Ramandeep Kaur
>     Priority: Minor
>  Attachments: Derby-13.patch
>
> Opening this bug on behalf of Satheesh Bandaram
> ---------------------------------------------------------
> The compiler mishandles quoted names with embedded periods when 
> checking uniqueness of table names in the from list of a 
> SELECT. Consider the following SQL:
>   create table "S1.T1" (id int not null primary key, d1 int);
>   create schema s1;
>   create table s1.t1 (id int not null primary key, d2 int);
>   select * from s1.t1, "S1.T1" where s1.t1.id = "S1.T1".id;
> Derby throws an error on the final SELECT statement:
> "ERROR 42X09: The table or alias name 'S1.T1' is used more than 
> once in the FROM list". However s1.t1 and "S1.T1" are different 
> tables.

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