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https://issues.apache.org/jira/browse/DERBY-4355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen updated DERBY-4355:
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Attachment: cross.diff
Here's an untested patch that adds support for CROSS JOIN in the parser, and
that seems to be enough to get it working.
ij> create table t1(x int);
0 rows inserted/updated/deleted
ij> insert into t1 values 1,2;
2 rows inserted/updated/deleted
ij> create table t2(x char(1));
0 rows inserted/updated/deleted
ij> insert into t2 values 'a','b';
2 rows inserted/updated/deleted
ij> select * from t1 cross join t2;
X |X
----------------
1 |a
1 |b
2 |a
2 |b
4 rows selected
> Implement CROSS JOIN
> --------------------
>
> Key: DERBY-4355
> URL: https://issues.apache.org/jira/browse/DERBY-4355
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Environment: any
> Reporter: Bernt M. Johnsen
> Attachments: cross.diff
>
>
> Implement the CROSS JOIN syntax
> SELECT * from t1 CROSS JOIN t2;
> as an alternative syntax to
> SELECT * FROM t1, t2;
> This should be pretty straight forward and ease the migration of SQL code to
> Derby.
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