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.
Regards
Jonathan Lewis
http://www.jlcomp.demon.co.uk
Now available One-day tutorials:
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The Co-operative Oracle Users' FAQ
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----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]>
Sent: 10 March 2003 13:43
> In the same vein, I'd suggest rewriting:
>
> and trunc(a.seg_dep_date_time) = :seg_dep_date
>
> as:
>
> and a.seg_dep_date_time >= :seg_dep_date
> and a.seg_dep_date_time < :seg_dep_date + 1
>
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--
Author: Jonathan Lewis
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