NAME

SQL::Translator::Producer::PostgreSQL - PostgreSQL producer for SQL::Translator

SYNOPSIS

  my $t = SQL::Translator->new( parser => '...', producer => 'PostgreSQL' );
  $t->translate;

DESCRIPTION

Creates a DDL suitable for PostgreSQL. Very heavily based on the Oracle producer.

Now handles PostGIS Geometry and Geography data types on table definitions. Does not yet support PostGIS Views.

Producer Args

You can change the global behavior of the producer by passing the following options to the "producer_args" attribute of "SQL::Translator".

postgres_version: The version of postgres to generate DDL for. Turns on features only available in later versions. The following features are supported

IF EXISTS: If your postgres_version is higher than 8.003 (I should hope it is by now), then the DDL generated for dropping objects in the database will contain IF EXISTS.

attach_comments

Generates table and column comments via the COMMENT command rather than as a comment in the DDL. You could then look it up with \dt+ or \d+ (for tables and columns respectively) in psql. The comment is dollar quoted with $comment$ so you can include ' in it. Just to clarify: you get this

    CREATE TABLE foo ...;
    COMMENT on TABLE foo IS $comment$hi there$comment$;

instead of this

    -- comment
    CREAT TABLE foo ...;

Extra args

Various schema types support various options via the "extra" attribute.

Tables

temporary: Produces a temporary table.

Views

temporary: Produces a temporary view.
materialized: Produces a materialized view.

Fields

list, custom_type_name: For enum types, list is the list of valid values, and custom_type_name is the name that the type should have. Defaults to $table_$field_type.
geometry_type, srid, dimensions, geography_type: Fields for use with PostGIS types.

PostgreSQL Create Table Syntax

  CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name (
      { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ]
      | table_constraint }  [, ... ]
  )
  [ INHERITS ( parent_table [, ... ] ) ]
  [ WITH OIDS | WITHOUT OIDS ]

where column_constraint is:

  [ CONSTRAINT constraint_name ]
  { NOT NULL | NULL | UNIQUE | PRIMARY KEY |
    CHECK (expression) |
    REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ]
      [ ON DELETE action ] [ ON UPDATE action ] }
  [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]

and table_constraint is:

  [ CONSTRAINT constraint_name ]
  { UNIQUE ( column_name [, ... ] ) |
    PRIMARY KEY ( column_name [, ... ] ) |
    CHECK ( expression ) |
    EXCLUDE [USING acc_method] (expression) [INCLUDE (column [, ...])] [WHERE (predicate)]
    FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ]
      [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] }
  [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]

Create Index Syntax

  CREATE [ UNIQUE ] INDEX index_name ON table
      [ USING acc_method ] ( column [ ops_name ] [, ...] )
      [ INCLUDE  ( column [, ...] ) ]
      [ WHERE predicate ]
  CREATE [ UNIQUE ] INDEX index_name ON table
      [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] )
      [ WHERE predicate ]

AUTHOR

Ken Youens-Clark <kclark@cpan.org>.