单选题Which technique retrieves the error number when explicit DML fails?（）ASQLCODE in an On-Error trigger. BSQLCODE in an exception handler. CDBMS_ERROR_CODE in an On-Error trigger. DDBMS_ERROR_CODE in an exception handler.
单选题
Which technique retrieves the error number when explicit DML fails?（）
A
SQLCODE in an On-Error trigger.
B
SQLCODE in an exception handler.
C
DBMS_ERROR_CODE in an On-Error trigger.
D
DBMS_ERROR_CODE in an exception handler.
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