B,C is correct.
A. false - ORA-01843: not a valid month
B. true - TO DATE >> TO_DATA : wrong entry?? - Normal operation after modification
C. true - Normal operation after modification
D. false - ORA-01858: a non-numeric character was found where a numeric was expected
E. false - ORA-01722: invalid number
I think C & E are correct.
A(false) - ADD_MONTHS(SYSDATE, 6) is already DATE type, so it will be an error to use TO_DATE function.
B(false) - same as A
C(true)
D(false) - It can't be possible to compare diffrent data type. ( date > string )
E(maybe true)
Am I wrong?
NVM this comment. I perfectly misunderstood about TO_DATE function. BC may be correct
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