54 lines
1.4 KiB
PL/PgSQL
54 lines
1.4 KiB
PL/PgSQL
-- Find thousand and decimal digits separators
|
|
CREATE OR REPLACE FUNCTION @extschema@.CDB_DigitSeparator (rel REGCLASS, fld TEXT, OUT t CHAR, OUT d CHAR)
|
|
as $$
|
|
DECLARE
|
|
sql TEXT;
|
|
rec RECORD;
|
|
BEGIN
|
|
|
|
-- We're only interested in rows with either "," or '.'
|
|
sql := 'SELECT ' || quote_ident(fld) || ' as f FROM ' || rel::text
|
|
|| ' WHERE ' || quote_ident(fld) || ' ~ ''[,.]''';
|
|
|
|
FOR rec IN EXECUTE sql
|
|
LOOP
|
|
-- Any separator appearing more than once
|
|
-- will be assumed to be thousand separator
|
|
IF rec.f ~ ',.*,' THEN
|
|
t := ','; d := '.';
|
|
RETURN;
|
|
ELSIF rec.f ~ '\..*\.' THEN
|
|
t := '.'; d := ',';
|
|
RETURN;
|
|
END IF;
|
|
|
|
-- If both separator are present, rightmost
|
|
-- will be assumed to be decimal separator
|
|
IF rec.f ~ '\.' AND rec.f ~ ',' THEN
|
|
rec.f = reverse(rec.f);
|
|
IF strpos(rec.f, ',') < strpos(rec.f, '.') THEN
|
|
t := '.'; d := ',';
|
|
ELSE
|
|
t := ','; d := '.';
|
|
END IF;
|
|
RETURN;
|
|
END IF;
|
|
|
|
-- A separator NOT followed by 3 digits
|
|
-- will be assumed to be decimal separator
|
|
IF rec.f ~ ',' AND rec.f !~ '(,[0-9]{3}$)|(,[0-9]{3}[,.])' THEN
|
|
t := '.'; d := ',';
|
|
RETURN;
|
|
ELSIF rec.f ~ '\.' AND rec.f !~ '(\.[0-9]{3}$)|(\.[0-9]{3}[,.])' THEN
|
|
t := ','; d := '.';
|
|
RETURN;
|
|
END IF;
|
|
|
|
-- Otherwise continue looking
|
|
|
|
END LOOP;
|
|
|
|
END
|
|
$$
|
|
LANGUAGE 'plpgsql' STABLE STRICT PARALLEL SAFE;
|