diff options
Diffstat (limited to 'challenge-275/luca-ferrari/plpgsql/ch-2.sql')
| -rw-r--r-- | challenge-275/luca-ferrari/plpgsql/ch-2.sql | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/challenge-275/luca-ferrari/plpgsql/ch-2.sql b/challenge-275/luca-ferrari/plpgsql/ch-2.sql new file mode 100644 index 0000000000..3d5642972d --- /dev/null +++ b/challenge-275/luca-ferrari/plpgsql/ch-2.sql @@ -0,0 +1,32 @@ +-- +-- Perl Weekly Challenge 275 +-- Task 2 +-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-275> +-- + +CREATE SCHEMA IF NOT EXISTS pwc275; + +CREATE OR REPLACE FUNCTION +pwc275.task2_plpgsql( s text ) +RETURNS text +AS $CODE$ +DECLARE + output text := ''; + previous text; + c text; +BEGIN + + FOR c IN SELECT v FROM regexp_split_to_table( s, '' ) v LOOP + IF c ~ '[a-z]' THEN + previous := c; + ELSE + c := chr( c::int + ascii( 'a' ) ); + END IF; + + output := output || c; + END LOOP; + + return output; +END +$CODE$ +LANGUAGE plpgsql; |
