sql,multiple join,outer join issue

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LEARN ABOUT DEBIAN

dbix::class::sqlmaker::oraclejoins

DBIx::Class::SQLMaker::OracleJoins(3pm) 		User Contributed Perl Documentation		   DBIx::Class::SQLMaker::OracleJoins(3pm)

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 v5.14.2							    2011-11-29				   DBIx::Class::SQLMaker::OracleJoins(3pm)

Programming