how do i skip empty values supplied to %s in python flask mysql connector

Question

For example im doing a query to my database

try:
            dbConn = DatabasePool.getConnection()
            cursor = dbConn.cursor(dictionary=True)
            sqlquery = f"update table set name=%s if(name=%s is not null),description=%s if(description=%s is not null) where jsonid=%s"
            cursor.execute(
                sqlquery, (JSON['name'], JSON['description'], jsonid))

            dbConn.commit()
            rows = cursor.rowcount
            return rows

        finally:
            dbConn.close()

if i leave the name field blank. i will still be able to update my description likewise for my name.

how do i go about it doing it with the %s

i have also tried another way

sql = f"update table set name=if(name is null, name, %s), description = if(description is null, description, %s) where jsonID=%s"
            cursor.execute(
                sql, (JSON['name'], JSON['description'], jsonid))

i have to provide the 2 fields, if not it will throw me an 500 internal server error if one of the field is less.