Bool safely converts b to a sql.NullBool.

Int64 safely converts i to a sql.NullInt64.

JSON safely convers or marshals to a sql.NullJSONText Failure to marshal results in an error object.

MakeUUID safely converts s to a null.UUID.

String safely converts s to a sql.NullString.

Time safely converts tm to a sql.NullTime.

Timer is time interface.