ReferenceFunctionsUUID FunctionsGEN_ZERO_UUID本页总览GEN_ZERO_UUIDGenerate zero UUID.SyntaxGEN_ZERO_UUID()Return TypeZero UUID.ExamplesSELECT gen_zero_uuid();`+--------------------------------------+| gen_zero_uuid() |+--------------------------------------+| 00000000-0000-0000-0000-000000000000 |+--------------------------------------+