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CBO [message #617840] Thu, 03 July 2014 22:51 Go to next message
balaji123
Messages: 29
Registered: October 2009
Location: sanfrancisco
Junior Member
This question is related to CBO ( Cost based optimizer)

select a.*,b.* from a,b
where a.emp_no = b.emp_no +0
and a.dept_no = b.dept_no + 0
and a.sal > 3000 OR a.sal > 5000

toad optimizer suggested to use + 0 on sql where condition.
Please advise. +0 means ignoring index ?

Thanks in advance.

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