Syntax

IS_UUID(string_uuid)

Arguments

string_uuid: A string UUID value.

Return Type

TINYINT: Returns 1 or 0 to indicate TRUE or FALSE, respectively.

• If the argument is a valid string format UUID value, returns 1.

• If the argument is not a valid UUID value, returns 0.

• If the argument is a NULL value, returns SQL NULL.

Remarks

• A UUID is considered valid if it is a 128 bit identifier represented as a 32-character hexadecimal string divided into five fields separated by hyphens in the following format:

  aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee

  where,

  • a ,b,c,d, and e represent hexadecimal characters. Each pair of characters must be in the 00-FF range.

  • The length (number of characters) and size of each field are as follows:

    Field	Length	Size
    Field1	8	32 bits
    Field2	4	16 bits
    Field3	4	16 bits
    Field4	4	16 bits
    Field5	12	48 bits

  • Additional valid UUID formats include:

    • A continuous string of hexadecimal characters without hyphens (e.g., aaaaaaaabbbbccccddddeeeeeeeeeeee).

    • The format with hyphens, enclosed in curly braces (e.g., {aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee}).

Examples

Returns 1 for a valid UUID value.

SELECT IS_UUID('e2a2461e-1a08-456b-9eee-cd5dc0998340')
AS result;

+------------+
|   result   |
+------------+
|          1 |
+------------+

Returns 1 for a valid UUID value.

SELECT IS_UUID('6701a3357fe041b5aca07f5c21c51dcf')
AS result;

+------------+
|   result   |
+------------+
|          1 |
+------------+

Returns 1 for a valid UUID value.

SELECT IS_UUID('{ae0770dd-3d5e-413b-a630-59f2efa3fdd4}')
AS result;

+------------+
|   result   |
+------------+
|          1 |
+------------+

Returns 0 for an invalid UUID value.

SELECT IS_UUID('b34a-4666-a35a-6bbbf349') AS result;

+--------+
| result |
+--------+
|      0 |
+--------+