NAME

DBIx::Class::Storage::DBI::Oracle::WhereJoins - Oracle joins in WHERE syntax support (instead of ANSI).

PURPOSE

This module was originally written to support Oracle < 9i where ANSI joins weren't supported at all, but became the module for Oracle >= 8 because Oracle's optimising of ANSI joins is horrible.

SYNOPSIS

DBIx::Class should automagically detect Oracle and use this module with no work from you.

DESCRIPTION

This class implements Oracle's WhereJoin support. Instead of:

SELECT x FROM y JOIN z ON y.id = z.id

It will write:

SELECT x FROM y, z WHERE y.id = z.id

It should properly support left joins, and right joins. Full outer joins are not possible due to the fact that Oracle requires the entire query be written to union the results of a left and right join, and by the time this module is called to create the where query and table definition part of the SQL query, it's already too late.

METHODS

See DBIx::Class::SQLMaker::OracleJoins for implementation details.

BUGS

Does not support full outer joins. Probably lots more.

SEE ALSO

DBIx::Class::SQLMaker

DBIx::Class::SQLMaker::OracleJoins

DBIx::Class::Storage::DBI::Oracle::Generic

DBIx::Class

AUTHOR

Justin Wheeler <jwheeler@datademons.com>

CONTRIBUTORS

David Jack Olrik <djo@cpan.org>

LICENSE

This module is licensed under the same terms as Perl itself.