mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-15 12:14:18 +00:00
2c902bbc65
* Implement support for different UUID binary formats * Declare error codes that the implementation uses * Make single-argument constructor explicit * Modernize parts of the solution * Make improvements based on review comments * Declare an error code being used
20 lines
1.5 KiB
SQL
20 lines
1.5 KiB
SQL
SELECT UUIDNumToString(toFixedString(unhex('0123456789ABCDEF0123456789ABCDEF' AS hex) AS bytes, 16) AS uuid_binary) AS uuid_string, hex(UUIDStringToNum(uuid_string)) = hex AS test1, UUIDStringToNum(uuid_string) = bytes AS test2;
|
|
SELECT UUIDNumToString(toFixedString(unhex(materialize('0123456789ABCDEF0123456789ABCDEF') AS hex) AS bytes, 16) AS uuid_binary) AS uuid_string, hex(UUIDStringToNum(uuid_string)) = hex AS test1, UUIDStringToNum(uuid_string) = bytes AS test2;
|
|
SELECT hex(UUIDStringToNum('01234567-89ab-cdef-0123-456789abcdef'));
|
|
SELECT hex(UUIDStringToNum(materialize('01234567-89ab-cdef-0123-456789abcdef')));
|
|
SELECT '01234567-89ab-cdef-0123-456789abcdef' AS str, UUIDNumToString(UUIDStringToNum(str)), UUIDNumToString(UUIDStringToNum(toFixedString(str, 36)));
|
|
SELECT materialize('01234567-89ab-cdef-0123-456789abcdef') AS str, UUIDNumToString(UUIDStringToNum(str)), UUIDNumToString(UUIDStringToNum(toFixedString(str, 36)));
|
|
SELECT toString(toUUID('3f1ed72e-f7fe-4459-9cbe-95fe9298f845'));
|
|
|
|
-- conversion back and forth to big-endian hex string
|
|
with generateUUIDv4() as uuid,
|
|
identity(lower(hex(reverse(reinterpretAsString(uuid))))) as str,
|
|
reinterpretAsUUID(reverse(unhex(str))) as uuid2
|
|
select uuid = uuid2;
|
|
|
|
select '-- UUID variants --';
|
|
select hex(UUIDStringToNum('00112233-4455-6677-8899-aabbccddeeff', 1));
|
|
select hex(UUIDStringToNum('00112233-4455-6677-8899-aabbccddeeff', 2));
|
|
select UUIDNumToString(UUIDStringToNum('00112233-4455-6677-8899-aabbccddeeff', 1), 1);
|
|
select UUIDNumToString(UUIDStringToNum('00112233-4455-6677-8899-aabbccddeeff', 2), 2);
|