Re: Query rewrite help needed

Unfortunately the example loses
a little credibility and impact because
I put:

    > where trunc(sysdate) = '01-Dec-2002';

rather than

    where trunc(d1) = '01-Dec-2002';

I just can't seem to get the cut and paste to work properly from my laptop to my
email machine :(

Regards

Jonathan Lewis
http://www.jlcomp.demon.co.uk

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The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html

• Original Message ----- To: <ORACLE-L_at_fatcity.com> Sent: 10 March 2003 15:26

>
> Tim,
>
> Following your trunc() line, have you come
> across this feature of 9.2 (and some earlier
> versions) -
>
> create index t1_i2 on t1(d1);
> analyze table t1 compute statistics;
>
> select * from t1
> where trunc(sysdate) = '01-Dec-2002';
>
> Execution plan:
> -----------------------
> table access (by index rowid) of 'T1'
> index (range scan) of 'T1_I2' (non-unique)
>
> Note the index name, in particular.
>
> It's another little feature that takes away
> some of the hassle of getting the text
> 'just so'.
>
> How does it do it, you ask ? I'll leave it
> open for a while in case anyone wants to
> have some fun guessing.
>
> All correct answers received by 5 pm (GMT)
> tonight will go into a prize draw.
> Note - Answers must be written on the back
> of a USD$100 bill and delivered by hand to
> the author's bank manager be eligible.
>
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Jonathan Lewis
  INET: jonathan_at_jlcomp.demon.co.uk

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