Assuming the following command has no typos in table names or attribute names, how many syntax errors does it contain?

SELECT CUS$\_$CODE, CUS$\_$LNAME, INV$\_$DATE, CUS$\_$BALANCE, FORMAT$($INV$\_$TOTAL, $\text{'}$C$\text{'})$ AS INVOICE TOTAL

FROM CUSTOMER C JOIN INVOICE I ON C$.$CUS$\_$CODE $=$ I.CUS$\_$CODE

WHERE INV$\_$DATE $>\text{'}2024-01-20\text{'},$ CUS$\_$BALANCE $>0$

ORDER BY CUS$\_$BALANCE DESC;

$3$

$5$

$7$