Calculation in a table

Hi All- I've the following table "Count"
Year        Period               Pd Start Dt    Pd End Dt    Count1         Count2      Count 3
2012    Period 05, 2012    25-APR-12    29-MAY-12    10779455    7557757      0
2012    Period 06, 2012    30-MAY-12    26-JUN-12    11056981    7750255       0
2012    Period 07, 2012    27-JUN-12    24-JUL-12    11328596    7940012        0
2012    Period 08, 2012    25-JUL-12    28-AUG-12    11678538    8182974       0
2012    Period 09, 2012    29-AUG-12    25-SEP-12    11951574    8372835      0
2012    Period 10, 2012    26-SEP-12    23-OCT-12    12228481    8567254       0
2012    Period 11, 2012    24-OCT-12    27-NOV-12    12543681    8789947       0
2012    Period 12, 2012    28-NOV-12    25-DEC-12    12791420    8964870      0
Now I want to do the following calculation on the table Count3= (Count1/Count2)*100. Can someone please help me with the SQL of this? I know this is pretty straight forward but any help is greatly appreciated. Thanks again.

Hi,
It sounds like you want this:
UPDATE cnt    -- COUNT is not a good table name
SET     count3 = (count1 / count2) * 100
or, if you don't want to actually change the table:
SELECT year, period, pd_start_dt, pd_end_dt, count1, count2
,       (count1 / count2) * 100    AS count3
FROM    cnt     -- COUNT is not a good table name
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all tables involved, and also post the results you want from that data.
If you're asking about a DML statement, such as UPDATE, the sample data will be the contents of the table(s) before the DML, and the results will be state of the changed table(s) when everything is finished.
Explain, using specific examples, how you get those results from that data.
Always say which version of Oracle you're using (e.g., 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002#9362002

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Message was edited by:
Mohdidubai52

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Edited by: [email protected] on Jun 3, 2010 5:33 AM
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