Jess Robinson > DBIx-Class-0.08198_01 > DBIx::Class::SQLMaker::OracleJoins

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Source   Latest Release: DBIx-Class-0.08270

NAME ^

DBIx::Class::SQLMaker::OracleJoins - Pre-ANSI Joins-via-Where-Clause Syntax

PURPOSE ^

This module is used with Oracle < 9.0 due to lack of support for standard ANSI join syntax.

SYNOPSIS ^

Not intended for use directly; used as the sql_maker_class for schemas and components.

DESCRIPTION ^

Implements pre-ANSI joins specified in the where clause. 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 ^

select

Overrides DBIx::Class::SQLMaker's select() method, which calls _oracle_joins() to modify the column and table list before calling next::method().

BUGS ^

Does not support full outer joins (however neither really does DBIC itself)

SEE ALSO ^

DBIx::Class::Storage::DBI::Oracle::WhereJoins - Storage class using this
DBIx::Class::SQLMaker - Parent module
DBIx::Class - Duh

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.

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