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@kjmph
kjmph / A_UUID_v7_for_Postgres.sql
Last active April 23, 2024 15:26
Postgres PL/pgSQL function for UUID v7 and a bonus custom UUID v8 to support microsecond precision as well. Read more here: https://datatracker.ietf.org/doc/draft-peabody-dispatch-new-uuid-format/
-- Based off IETF draft, https://datatracker.ietf.org/doc/draft-peabody-dispatch-new-uuid-format/
create or replace function uuid_generate_v7()
returns uuid
as $$
begin
-- use random v4 uuid as starting point (which has the same variant we need)
-- then overlay timestamp
-- then set version 7 by flipping the 2 and 1 bit in the version 4 string
return encode(
@kenji4569
kenji4569 / ulid_converter.sql
Last active March 23, 2024 13:48
ULID (26 characters in Crockford's base32) conversion for MySQL function
# Define ULID_DECODE and ULID_ENCODE which convert a ulid string to a binary and vice versa.
delimiter //
DROP FUNCTION IF EXISTS ULID_DECODE//
CREATE FUNCTION ULID_DECODE (s CHAR(26)) RETURNS BINARY(16) DETERMINISTIC
BEGIN
DECLARE s_base32 CHAR(26);
SET s_base32 = REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(UPPER(s), 'J', 'I'), 'K', 'J'), 'M', 'K'), 'N', 'L'), 'P', 'M'), 'Q', 'N'), 'R', 'O'), 'S', 'P'), 'T', 'Q'), 'V', 'R'), 'W', 'S'), 'X', 'T'), 'Y', 'U'), 'Z', 'V');
RETURN UNHEX(CONCAT(LPAD(CONV(SUBSTRING(s_base32, 1, 2), 32, 16), 2, '0'), LPAD(CONV(SUBSTRING(s_base32, 3, 12), 32, 16), 15, '0'), LPAD(CONV(SUBSTRING(s_base32, 15, 12), 32, 16), 15, '0')));
END//
@maephisto
maephisto / Javascript ISO country code to country name conversion
Last active November 3, 2023 21:05
ISO 3166-1 alpha-2 country code to country name conversion with a simple Javascript implementation, an array and a function.
var isoCountries = {
'AF' : 'Afghanistan',
'AX' : 'Aland Islands',
'AL' : 'Albania',
'DZ' : 'Algeria',
'AS' : 'American Samoa',
'AD' : 'Andorra',
'AO' : 'Angola',
'AI' : 'Anguilla',
'AQ' : 'Antarctica',