[
https://issues.apache.org/jira/browse/DERBY-6040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rick Hillegas closed DERBY-6040.
--------------------------------
> Incorrect row order returned for an ORDER BY on a join of two table functions
> -----------------------------------------------------------------------------
>
> Key: DERBY-6040
> URL: https://issues.apache.org/jira/browse/DERBY-6040
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.10.1.1
> Reporter: Rick Hillegas
> Fix For: 10.10.1.1
>
> Attachments: derby-6040-01-aa-makeColumnDescriptor.diff,
> derby-6040.sql, derbyAST.xml
>
>
> Using the metadata table functions introduced by DERBY-6022, I get the wrong
> row order on this query:
> select t.table_name c2, c.column_name c3
> from table( getTables( null, '%', '%' ) ) t,
> table( getColumns( null, '%', '%', '%') ) c
> where c.table_name = t.table_name
> and t.table_type = 'TABLE'
> and c.table_schem = t.table_schem
> order by c2, c3;
> However, I get the correct order on the following query. The good query
> returns the same rows but in the correct order. The only difference between
> the queries is that the bad one has an extra, NOP join clause.
> Here is the full result of a script showing the problem:
> ij version 10.10
> ij> connect 'jdbc:derby:memory:db;create=true';
> ij> create table t( d int, u varchar( 30 ) );
> 0 rows inserted/updated/deleted
> ij> create table s( d int, u varchar( 30 ) );
> 0 rows inserted/updated/deleted
> ij> call syscs_util.syscs_register_tool( 'databaseMetaData', true );
> 0 rows inserted/updated/deleted
> ij> -- columns are ordered correctly
> select t.table_name c2, c.column_name c3
> from table( getTables( null, '%', '%' ) ) t,
> table( getColumns( null, '%', '%', '%') ) c
> where c.table_name = t.table_name
> and t.table_type = 'TABLE'
> order by c2, c3;
> C2
> |C3
>
>
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> S
> |D
>
>
> S
> |U
>
>
> T
> |D
>
>
> T
> |U
>
>
> 4 rows selected
> ij> -- columns are ordered incorrectly
> select t.table_name c2, c.column_name c3
> from table( getTables( null, '%', '%' ) ) t,
> table( getColumns( null, '%', '%', '%') ) c
> where c.table_name = t.table_name
> and t.table_type = 'TABLE'
> and c.table_schem = t.table_schem
> order by c2, c3;
> C2
> |C3
>
>
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> T
> |D
>
>
> S
> |D
>
>
> T
> |U
>
>
> S
> |U
>
>
> 4 rows selected
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