blob: 3d5642972da87b300ebc1146812bc1d809c3ed36 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
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;
|
