Re: [jira] Commented: (DERBY-13) Quoted names with embedded period mishandled in from list

[Satheesh Bandaram]

If we follow Dan's suggestion of using TableName for correlation names, then the allTableName here should not be a string... If a correlation name is "S1.T1", then the tableName part of TableName is S1.T1 and schema name is NULL. If a correlation name s1.t1, then tableName would be S1 and schemaName is T1. We would then compare this allTableName, which is a TableName instance, with fromTable's TableName, using it's equals() method. Satheesh Shreyas Kaushik (JIRA) wrote: [ http://nagoya.apache.org/jira/browse/DERBY-13?page=comments#action_57085 ] Shreyas Kaushik commented on DERBY-13: -------------------------------------- In response to Sateesh's comment: Here in this method the allTableName is just a String and we cannot know the schema name for that table. Only for the table in the from list can the schema be known. So it is still a compile / bind time issue. 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.