package DBIx::Class::Storage::DBI::Oracle::WhereJoins; use strict; use warnings; use base qw( DBIx::Class::Storage::DBI::Oracle::Generic ); use mro 'c3'; __PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker::OracleJoins'); 1; __END__ =pod =head1 NAME DBIx::Class::Storage::DBI::Oracle::WhereJoins - Oracle joins in WHERE syntax support (instead of ANSI). =head1 PURPOSE This module is used with Oracle < 9.0 due to lack of support for standard ANSI join syntax. =head1 SYNOPSIS DBIx::Class should automagically detect Oracle and use this module with no work from you. =head1 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. =head1 METHODS See L<DBIx::Class::SQLMaker::OracleJoins> for implementation details. =head1 BUGS Does not support full outer joins. Probably lots more. =head1 SEE ALSO =over =item L<DBIx::Class::SQLMaker> =item L<DBIx::Class::SQLMaker::OracleJoins> =item L<DBIx::Class::Storage::DBI::Oracle::Generic> =item L<DBIx::Class> =back =head1 FURTHER QUESTIONS? Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>. =head1 COPYRIGHT AND LICENSE This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE> by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can redistribute it and/or modify it under the same terms as the L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.