Postgresql - Regex delt csv-linje med potentiale-citater

Ikke om regexp, men det virker

create or replace function split_csv(
  line text,
  delim_char char(1) = ',',
  quote_char char(1) = '"')
returns setof text[] immutable language plpythonu as $$
  import csv
  return csv.reader(line.splitlines(), quotechar=quote_char, delimiter=delim_char, skipinitialspace=True, escapechar='\\')
$$;

select *, x[4] from split_csv('field1|"field2"|field3|"22 \" lcd \| screen "'||E'\n'||'a|b', delim_char := '|') as x;
 

╔═════════════════════════════════════════════════════════════════ ╤════════════════════╗║ x │ x ║╠══════════════════════ ║ felt2,felt3,"22 \" lcd | skærm "} │ 22" lcd | skærm ║║ {a,b} │ ░░░░ ║╚══════════════════════════════════════════ ═══════════╧══════════════════╝pre