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06.30.2004 at 01:08AM PDT, ID: 21042858
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8.2

Oracle date function problem - calculating previous months

Asked by yerdaman in Oracle 3rd Party Tools

Tags: , , , ,

I've currently got an Oracle view that requires minimal maintenance each new month but I'm sure there is a way of coding it to be maintenance free if only I can find a way of calculating the previous month.

Rather than coding the full view, I've extracted the problem code in question.

Based on SYSDATE = 30th June 2004 the following statement returns the values shown below (which it exactly what I require for my view)
SELECT TO_CHAR(SYSDATE, 'YYMM'), TO_CHAR(SYSDATE, 'YYMM') -1, TO_CHAR(SYSDATE, 'YYMM') -2, TO_CHAR(SYSDATE, 'YYMM') -3 FROM DUAL
      0406      405      404      403

However, if the SYSDATE = 30 January, 2004 (or any other date less than April) then the code fails with the following results:
               0401             0400      399           398
whereas my desired results would by 0401      0312         0311      0310Start Free Trial
 
 
[+][-]06.30.2004 at 04:17AM PDT, ID: 11434311

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About this solution

Zone: Oracle 3rd Party Tools
Tags: oracle, date, previous, month, function
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Solution Provided By: dazzled1
Participating Experts: 1
Solution Grade: A
 
 
 
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