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--
-- Perl Weekly Challenge 331
-- Task 1
-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-331>
--
CREATE SCHEMA IF NOT EXISTS pwc331;
CREATE OR REPLACE FUNCTION
pwc331.task1_plpgsql( s text )
RETURNS int
AS $CODE$
SELECT l
FROM (
SELECT length( v::text ) as l, row_number() over () as r
FROM regexp_split_to_table( s, '\s+' ) v
WHERE length( v::text ) > 0
ORDER BY r DESC
)
LIMIT 1;
$CODE$
LANGUAGE sql;
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