oracle sql command

Database Management

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May 7th, 2003, 06:58 AM

leugim

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oracle sql command

Hello,

I am having problems making the fallowing select:

Imagine this table:

Serial_num | Sequence | Status
---------------------------------------
223344 | 2 | 2
223344 | 3 | 2
223344 | 4 | 2
223344 | 5 | 2 --------------->want this line

123456 | 2 | 2
123456 | 3 | 2
123456 | 4 | 2 --------------->want this line

111111 | 2 | 2
111111 | 3 | 2 --------------->want this line

What i want is:

Serial_num | Sequence | Status
---------------------------------------
223344 | 5 | 2

123456 | 4 | 2

111111 | 3 | 2

I want all the results where my SEQUENCE IS MAX...

How can a make i select to retrive this values?

Best regards
Miguel

May 7th, 2003, 08:29 AM

swampBoogie

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Code:

select * 
  from thisTable as t1
where Sequence = (
select max(t2.Sequence)
  from thisTable as t2
 where t2.Serial_num = t1.Serial_num)

May 7th, 2003, 12:06 PM

leugim

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...

Thkz

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