SQL is a textual format. Your DB driver may expect a UUID to be provided them in the standard string format. If your language lacks a standard UUID type, the dr

SQL is a textual format. Your DB driver may expect a UUID to be provided them in the standard string format. If your language lacks a standard UUID type, the drivers may expect you to provide UUIDs as strings even when using parameter binding. e.g. MySQL accepts only "no dashes" and the standard textual format: https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-functions.html#function_is-uuid https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-functi... Postgres is a bit more flexible, but still expects hyphens to be after multiples of four characters if present: https://www.postgresql.org/docs/9.1/datatype-uuid.html https://www.postgresql.org/docs/9.1/datatype-uuid.html