I want to get records corresponding to maximum serial number

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Hi all

I want to get records corresponding to maximum serial number

slno date name

1-22-12-2011-1 1/1/2012 Amrutha
1-22-12-2011-2 1/1/2012 Arjun
1-22-12-2011-3 1/1/2012 Anisha

I want a query which returns data corresponding to slno 1-22-12-2011-3 i mean maximum in last postion.how write query for it .my database is MySQL.

Thanks In Advance
Amrutha

Posted 8-Jul-12 21:28pm

amritha444

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akee seth 9-Jul-12 3:43am

Can you explain me wheather you want to fetch data for the max slno only or for all records sorting in order of slno ??

amritha444 9-Jul-12 3:52am

hithanks for the response

I want that Row only

2 solutions

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OriginalGriff · Answer 1 · 2012-07-08T21:42:00

The easiest way is to not store that in your DB as a single object. It looks from here to be made up of 5 components:

1-
22-12-2011-
1 
1/1/2012 
Text

If you want to order results by any of these (or more probably by some combination of these) then I would store them as separate numeric and DateTime based values, and re-assemble the serial number when I needed it for presentation. Then it is a simple matter to use the Sql ORDER BY clause:

SQL

...ORDER BY manufactureDate, itemNumber ASC

Having it as one text field gives huge problems in sorting as you have to cope with the potential varying length on the 22-12-2011 part when it is early in the month, or the month is early in the year.

akee seth · Answer 2 · 2012-07-09T00:20:00

Solution 2

This query may help you .

SQL

SELECT *  
FROM Table   
ORDER BY slno * 1 desc 
limit 1;

Posted 9-Jul-12 0:20am

akee seth