mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 21:51:57 +00:00
10 lines
567 B
SQL
10 lines
567 B
SQL
SELECT cityHash64(toUUID('61f0c404-5cb3-11e7-907b-a6006ad3dba0')) AS uuid;
|
|
DROP TABLE IF EXISTS t_uuid;
|
|
CREATE TABLE t_uuid (x UUID) ENGINE=TinyLog;
|
|
INSERT INTO t_uuid SELECT generateUUIDv4();
|
|
INSERT INTO t_uuid SELECT generateUUIDv4();
|
|
INSERT INTO t_uuid SELECT generateUUIDv4();
|
|
INSERT INTO t_uuid SELECT generateUUIDv4();
|
|
SELECT (SELECT count() FROM t_uuid WHERE cityHash64(reinterpretAsString(x)) = cityHash64(x) and length(reinterpretAsString(x)) = 16) = (SELECT count() AS c2 FROM t_uuid WHERE length(reinterpretAsString(x)) = 16);
|
|
DROP TABLE IF EXISTS t_uuid;
|