oracular (3) DBIx::Class::SQLMaker::OracleJoins.3pm.gz

Provided by: libdbix-class-perl_0.082843-1_all bug

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


FURTHER QUESTIONS?
       Check the list of additional DBIC resources.


       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.