**how to get to know the field is allowed null? can not found the nullable property .**

[53938871]

how to get to know the field is allowed null? can not found the nullable property .
const [results, fields] = await pool.query('select * from sys_menu limit 1');
for(const field of fields) {
console.log('column:', field.name);
console.log('type:', field.columnType);
console.log('length:', field.length);
console.log('default:', field.default);
}