Erik Lott eriklott
eriklott
/ ulid_converter.sql
Created
February 26, 2022 08:56
— forked from kenji4569/ulid_converter.sql
ULID (26 characters in Crockford's base32) conversion for MySQL function
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| # 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// |