blob: c1fa0cc3ee7e13efd867aaa960b09cdf37064322 (
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
33
34
35
36
37
38
39
40
41
|
-- Perl Weekly Challenge 184
-- Task 2
CREATE SCHEMA IF NOT EXISTS pwc184;
CREATE OR REPLACE FUNCTION
pwc184.task2_plpgsql( strings text[])
RETURNS TABLE (n text, l text)
AS $CODE$
DECLARE
current_string text;
current_thing text;
BEGIN
n := null;
l := null;
FOREACH current_string IN ARRAY strings LOOP
FOREACH current_thing IN ARRAY regexp_split_to_array( current_string, '' ) LOOP
-- since '\w' gets also numbers
-- the test is performed only if it is not
-- a number
IF current_thing ~ '\d' THEN
IF n IS NULL THEN
n := current_thing::text;
ELSE
n := n || ',' || current_thing;
END IF;
ELSEIF current_thing ~ '\w' THEN
IF l IS NULL THEN
l := current_thing::text;
ELSE
l := l || ',' || current_thing;
END IF;
END IF;
END LOOP;
END LOOP;
RETURN NEXT;
RETURN;
END
$CODE$
LANGUAGE plpgsql;
|
