RE: impossible sql request

Adding the C1 2 0 record...

select * from test a
where n1 = (select Min(n1) from test where a.id = id)
or n2 = (select Min(n2) from test where a.id = id)

will return...

ID N1 N2
C1 4 0
C1 2 0

Mr. Morgan's modification to accommodate the point I missed will result in the same set of data.

Mr. Berendt's solution seems closer...his result set (with the extra record Paul pointed out) is...

select * from test a
where n1 = (select Min(n1) from test where a.id = id)
or n2 = (select Min(n2) from test where a.id = id and n2 <> 0)

ID N1 N2
C1 3 4
C1 2 0

steve


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Morgan, Paul
Sent: Wednesday, February 09, 2011 8:38 AM
To: Midrange Systems Technical Discussion
Subject: RE: impossible sql request

David,

Steve's answer is close and gives the lines with the lowest values for n1 or n2.

Do you also want to select lowest n1 only for lines where n2 is zero?

select *
from test a
where n1 = ( select Min( n1 )
from test
where a.id = id
and n2 = 0 )
or n2 = ( select Min( n2 )
from test
where a.id = id )

If you had a line of:

C1 2 0

would you expect to only get that one line?

Paul Morgan

Principal Programmer Analyst
IT Supply Chain/Replenishment

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Needles,Stephen J
Sent: Wednesday, February 09, 2011 9:06 AM
To: Midrange Systems Technical Discussion
Subject: RE: impossible sql request

select * from test a
where n1 = (select Min(n1) from test where a.id = id)
or n2 = (select Min(n2) from test where a.id = id)

not particularly pretty...but it works.

steve

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of David FOXWELL
Sent: Wednesday, February 09, 2011 7:55 AM
To: Midrange Systems Technical Discussion
Subject: impossible sql request


Hi all,
I need to scan this table and get the lines having the lowest value for n1 or n2

id n1 n2
c1 4 0
c1 3 4
c1 4 5
c1 5 6

If n2 is not 0, I ignore the value of n1.

So in this example I should return 2 lines containing 4 :

c1 4 0
c1 3 4

Thanks