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Editorial Team
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Asked: 2026-06-17T06:36:24+00:00

I am using Sybase which doesn’t support a lot of cool functions that people

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I am using Sybase which doesn’t support a lot of cool functions that people use here. So, please keep that in mind while helping me.

I have a db which looks something like this:

Type         RowTime             Quantity        
cat1  1      10:01:01.000        50          
cat1  2      10:01.01.001        0          
cat1  3      10:01:01.002        1000          
cat1  4      10:01.01.003        100          
cat1  5      10:01:03.001        100

Except there are cat2, cat3, cat4, etc as well.

I want to find the extract the last row from each category based on time arranged in ascending order. So, for the given table above I want to extract row 5.

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1 Answer

  1. Editorial Team

    After taking a look at sybase documentation it seems like you have a rank function. So here’s a stab at it:

    declare @table table ( tp varchar(30), rowtime datetime, quantity int) 

insert @table select 'cat1 1', '20120101', 50
insert @table select 'cat2 1', '20130101', 50
insert @table select 'cat3 1', '20110101', 50
insert @table select 'cat4 1', '20100101', 50
insert @table select 'cat5 1', '20090101', 50
select * from (
   select *, RANK() OVER (ORDER BY  RowTime DESC) AS Rank from @table 
) a
where [RANK]=1

    Got the rank function from here:
    http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc00169.1270/html/iqperf/CEGDJFCE.htm

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