challenge-325/luca-ferrari/plpgsql/ch-1.sql


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--
-- Perl Weekly Challenge 325
-- Task 1
-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-325>
--

CREATE SCHEMA IF NOT EXISTS pwc325;

CREATE OR REPLACE FUNCTION
pwc325.task1_plpgsql( b text )
RETURNS int
AS $CODE$
   SELECT max( length( v::text ) - 2 )
   FROM  regexp_matches( b, '1+', 'g' ) v;
$CODE$
LANGUAGE sql;