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Order version numbers in Oracle.

Posted on 2013-05-13
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Last Modified: 2013-05-14
In Oracle SQL how can I sort by version numbers, at the moment version numbers are as follows when I do a simple order by of the version column...

6.0.1
6.0.10
6.0.11
6.0.12
6.0.13
6.0.14
6.0.2
6.0.3

The list should be as follows...

6.0.1
6.0.2
6.0.3
6.0.10
6.0.11
6.0.12
6.0.13
6.0.14
0
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Question by:Blowfelt82
6 Comments
 
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Expert Comment

by:Naveen Kumar
ID: 39163753
just do a conversion to a number and all should be fine

order by to_number(your_column)
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LVL 28

Expert Comment

by:Naveen Kumar
ID: 39163754
you need to ensure that no characters etc are there in that version number column otherwise you will get an error saying invalid number when you use to_number(..) conversion.
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Accepted Solution

by:
OP_Zaharin earned 500 total points
ID: 39163758
- try using lpad() function if your column is not number datatype

- my example below pads the front of the data with spaces up to 10 characters as your data length is 6. you can increase the 10 if the data length in the version column is more than 10.

SELECT version FROM tablename
ORDER BY LPAD(version, 10);
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Author Closing Comment

by:Blowfelt82
ID: 39163768
Worked like a charm - thanks
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Expert Comment

by:OP_Zaharin
ID: 39163770
glad able to help :)
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Expert Comment

by:PortletPaul
ID: 39163884
:)

interesting question, I was thinking of regexp_ replace for this, but I hate regular expressions to be honest so I went looking and:
a different approach is recorded here
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