On Thursday 25. March 2010 16.16.53 Leif Biberg Kristensen wrote:
> I'm struggling with how to make plpgsql iterate through a list of numbers
> input as a text string, eg. "1438 2656 973 4208". I figure that I can use the
> regexp_split_to_array() function to make an array of the string, but can I
> iterate through an array with eg. a FOR loop?
I found a solution myself through trial-and-error:
CREATE OR REPLACE FUNCTION text_to_arr(TEXT) RETURNS VOID AS $$
DECLARE arr TEXT ARRAY;
BEGIN arr := regexp_split_to_array($1, E'\\s+'); FOR i IN 1..array_length(arr, 1) LOOP RAISE NOTICE '%',
arr[i]::INTEGER; END LOOP; RETURN;
END
$$ LANGUAGE plpgsql IMMUTABLE;
pgslekt=> select * from text_to_arr('1438 2607 1504');
NOTICE: 1438
NOTICE: 2607
NOTICE: 1504text_to_arr
-------------
(1 row)
pgslekt=>
regards,
--
Leif Biberg Kristensen
http://solumslekt.org/
