Performance Challenge - Secondary Index

Hi Gurus,

This is for Big ones. I have a Select on BNKA table with where condition on BANKL field.

Now, I also have a Secondary Index on BNKA table with BANKL Field.

So When write the Select Statement like this.

SELECT * FROM BNKA INTO WA WHERE BANKL = '12345678'.

Will the above mentioned select picks Secondary Index. As per my search and analysis in SCN and as well as in the Code From SAP TIPS & TRICKS I see the below Select will work more faster than the above one.

SELECT * FROM BNKA INTO WA WHERE BANKL = '12345678'. %_HINTS ORACLE 'INDEX("BNKA" "BNKA~Z01")'.              

Z01 is the Secondary Index with Fields MANDT and BANKL.

Now tell me your opinion gurus. Which one we should go for - and Why?

Regards,

Venkat Sesha