|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.
- 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)
- DBIx::Class::Storage::DBI::Oracle::WhereJoins - Storage class using this
- DBIx::Class::SQLMaker - Parent module
- DBIx::Class - Duh
FURTHER QUESTIONS?¶Check the list of additional DBIC resources.
COPYRIGHT AND LICENSE¶This module is free software copyright by the DBIx::Class (DBIC) authors. You can redistribute it and/or modify it under the same terms as the DBIx::Class library.