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| -rw-r--r-- | challenge-217/luca-ferrari/postgresql/ch-2.sql | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/challenge-217/luca-ferrari/postgresql/ch-2.sql b/challenge-217/luca-ferrari/postgresql/ch-2.sql new file mode 100644 index 0000000000..e41dae8834 --- /dev/null +++ b/challenge-217/luca-ferrari/postgresql/ch-2.sql @@ -0,0 +1,19 @@ +-- +-- Perl Weekly Challenge 217 +-- Task 2 +-- +-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-217/> +-- + +CREATE SCHEMA IF NOT EXISTS pwc217; + +CREATE OR REPLACE FUNCTION +pwc217.task2_plpgsql( a int[] ) +RETURNS int +AS $CODE$ + SELECT string_agg( v.vv::text, '' )::int + FROM ( SELECT vv + FROM unnest( a ) vv + ORDER BY ( vv % 10 ) DESC ) v; +$CODE$ +LANGUAGE sql; |