bool_plperl

transform between bool and plperl

plperl : transform between bool and plperl

Overview

ID	Extension	Package	Version	Category	License	Language
3261	bool_plperl	plperl	`1.0`	LANG	PostgreSQL	C

Attribute	Has Binary	Has Library	Need Load	Has DDL	Relocatable	Trusted
--s-dt-	No	Yes	No	Yes	no	yes

Relationships
Requires	plperl
See Also	plperlu
Siblings	plperl hstore_plperl jsonb_plperl

Packages

PG18	PG17	PG16	PG15	PG14
1.0	1.0	1.0	1.0	1.0

This is a built-in contrib extension ship with the PostgreSQL kernel

Install

Create this extension with:

CREATE EXTENSION bool_plperl CASCADE; -- requires plperl

Usage

bool_plperl: Transform between bool and PL/Perl

Provides a transform for the bool type for PL/Perl. When loaded, PostgreSQL boolean values are automatically converted to Perl native boolean representations and vice versa, instead of being passed as strings.

CREATE EXTENSION bool_plperl;

CREATE FUNCTION check_flag(val boolean) RETURNS text
LANGUAGE plperl TRANSFORM FOR TYPE boolean AS $$
  # val is a native Perl boolean (1 or undef), not a string
  if ($_[0]) {
    return "flag is set";
  }
  return "flag is not set";
$$;

SELECT check_flag(true);   -- flag is set
SELECT check_flag(false);  -- flag is not set