IS_UUID() - Validating UUID String Format

Q

How to validate a UUID (Universal Unique IDentifier) string using the IS_UUID() function?

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A

IS_UUID(uuid) is a MySQL built-in function that validates a UUID (Universal Unique IDentifier) string. It only checks if the given UUID is a 32-digit hexadecimal string or not. For example:

SELECT IS_UUID('447f9022-956d-11ee-b1eb-65d6038dbafa');
  -- +-------------------------------------------------+
  -- | IS_UUID('447f9022-956d-11ee-b1eb-65d6038dbafa') |
  -- +-------------------------------------------------+
  -- |                                               1 |
  -- +-------------------------------------------------+

SELECT IS_UUID('aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee');
  -- +-------------------------------------------------+
  -- | IS_UUID('aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee') |
  -- +-------------------------------------------------+
  -- |                                               1 |
  -- +-------------------------------------------------+

If the UUID string is too short (less than 32 digits) or invalid characters, IS_UUID() returns 0. For example:

SELECT IS_UUID('447f9022-956d-11ee-b1eb-65d6038d');
  -- +---------------------------------------------+
  -- | IS_UUID('447f9022-956d-11ee-b1eb-65d6038d') |
  -- +---------------------------------------------+
  -- |                                           0 |
  -- +---------------------------------------------+

SELECT IS_UUID('aaaaaaaa-bbbb-cccc-zzzz-eeeeeeeeeeee');
  -- +-------------------------------------------------+
  -- | IS_UUID('aaaaaaaa-bbbb-cccc-zzzz-eeeeeeeeeeee') |
  -- +-------------------------------------------------+
  -- |                                               0 |
  -- +-------------------------------------------------+

Reference information of the IS_UUID() function:

IS_UUID(uuid): boolean
  Returns 1 if and only if the argument is a valid UUID.

Arguments, return value and availability:
  uuid: Required. The UUID string to be validated.
  boolean: Return value. 1 if and only if the argument is a valid UUID.
  Available since MySQL 5.7.

 

UUID() - Generating UUID String

BIN_TO_UUID() - Converting Binary to UUID

MySQL Functions on UUID Values

⇑⇑ MySQL Function References

2023-12-08, 323🔥, 0💬