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SQL::Translator::Producer::Oracle.3pm

NAME

SQL::Translator::Producer::Oracle - Oracle SQL producer

SYNOPSIS

   use SQL::Translator;
 
   my $t = SQL::Translator->new( parser => '...', producer => 'Oracle' );
   print $translator->translate( $file );
 
 

DESCRIPTION

Creates an SQL DDL suitable for Oracle.

producer_args

delay_constraints

This option remove the primary key and other key constraints from the CREATE TABLE statement and adds ALTER TABLEs at the end with it.

quote_field_names

Controls whether quotes are being used around column names in generated DDL.

quote_table_names

Controls whether quotes are being used around table, sequence and trigger names in generated DDL.

NOTES

Autoincremental primary keys

This producer uses sequences and triggers to autoincrement primary key columns, if necessary. SQLPlus and DBI expect a slightly different syntax of CREATE TRIGGER statement. You might have noticed that this producer returns a scalar containing all statements concatenated by newlines or an array of single statements depending on the context (scalar, array) it has been called in.

SQLPlus expects following trigger syntax:

     CREATE OR REPLACE TRIGGER ai_person_id
     BEFORE INSERT ON person
     FOR EACH ROW WHEN (
      new.id IS NULL OR new.id = 0
     )
     BEGIN
      SELECT sq_person_id.nextval
      INTO :new.id
      FROM dual;
     END;
     /
 
 

Whereas if you want to create the same trigger using ``do'' in DBI, you need to omit the last slash:

     my $dbh = DBI->connect('dbi:Oracle:mysid', 'scott', 'tiger');
     $dbh->do("
         CREATE OR REPLACE TRIGGER ai_person_id
         BEFORE INSERT ON person
         FOR EACH ROW WHEN (
          new.id IS NULL OR new.id = 0
         )
         BEGIN
          SELECT sq_person_id.nextval
          INTO :new.id
          FROM dual;
         END;
     ");
 
 

If you call this producer in array context, we expect you want to process the returned array of statements using DBI like ``deploy'' in DBIx::Class::Schema does.

To get this working we removed the slash in those statements in version 0.09002 of SQL::Translator when called in array context. In scalar context the slash will be still there to ensure compatibility with SQLPlus.

CREDITS

Mad props to Tim Bunce for much of the logic stolen from his ``mysql2ora'' script.

AUTHORS

Ken Youens-Clark <kclark@cpan.org>, Alexander Hartmaier <abraxxa@cpan.org>, Fabien Wernli <faxmodem@cpan.org>.

SEE ALSO

SQL::Translator, DDL::Oracle, mysql2ora.