Veilig TO_NUMBER()

Van Oracle Database 12c Release 2 je zou TO_NUMBER . kunnen gebruiken met DEFAULT ... ON CONVERSION ERROR :

SELECT TO_NUMBER('*' DEFAULT 0 ON CONVERSION ERROR) AS "Value"
FROM DUAL;

Of CAST :

SELECT CAST('*' AS NUMBER DEFAULT 0 ON CONVERSION ERROR) AS "Value"
FROM DUAL;

db<>viooldemo