Страницы справочника OS X

Эта страница руководства для  версии 10.9 Mac OS X

Читать страницы руководства

DBIx::Class::SQLMaker::OracleJoins(3)User Contributed Perl DocumentationBIx::Class::SQLMaker::OracleJoins(3)



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.



perl v5.12.5                                     2011-07-26            DBIx::Class::SQLMaker::OracleJoins(3)