Solved

MSSQL get max number in range for multiple ranges

Posted on 2011-02-17
5
681 Views
Last Modified: 2012-05-11
I have a list of non-continuous numbers in a column on table 1, on table 2 of categories that show number sequences.

example
table 2
1 returns 1xxxx
2 lost  2xxxx
3 found 25xxx

table 1
14008
15001
25003

I want to find out the next number for each group.

Long way:
select * from table 2 as a
left join (select '1' as id, max(number)+ 1 as next_number from table 2 where number > 10000 and number < 20000) as b on a.id = b.id
left join (select '2' as id, max(number)+ 1 as next_number from table 2 where number > 20000 and number < 25000) as c on a.id = c.id

What is a better way of doing this?
0
Comment
Question by:freshgrill
  • 4
5 Comments
 
LVL 32

Expert Comment

by:ewangoya
ID: 34921014

select id, max(number) + 1
from table2
group by id
0
 

Author Comment

by:freshgrill
ID: 34921051
@ewangoya: Table 1 just shows the number sequence, ie. any number starting with 1..... is returns, basically 10000-20000.
0
 
LVL 32

Expert Comment

by:ewangoya
ID: 34921233

Use
with CTE (ID, Numbers)
as
(
    select 
       case 
          when number > 10000 and number < 20000 then
             1
          when number > 20000 and number < 25000 then
              2
          else
              3
        end as ID,
        number as Numbers
)
select ID, Max(Numbers) +1
from CTE
group by ID

Open in new window

0
 
LVL 32

Expert Comment

by:ewangoya
ID: 34921243
Oops I missed the table
with CTE (ID, Numbers)
as
(
    select 
       case 
          when number > 10000 and number < 20000 then
             1
          when number > 20000 and number < 25000 then
              2
          else
              3
        end as ID,
        number as Numbers
      from Table2  
)
select ID, Max(Numbers) +1
from CTE
group by ID

Open in new window

0
 
LVL 32

Accepted Solution

by:
ewangoya earned 500 total points
ID: 34921252
Sorry, its from Table1

with CTE (ID, Numbers)
as
(
    select
       case
          when number > 10000 and number < 20000 then
             1
          when number > 20000 and number < 25000 then
              2
          else
              3
        end as ID,
        number as Numbers
      from Table1  
)
select ID, Max(Numbers) +1
from CTE
group by ID
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I'm trying, I really am. But I've seen so many wrong approaches involving date(time) boundaries I despair about my inability to explain it. I've seen quite a few recently that define a non-leap year as 364 days, or 366 days and the list goes on. …
In this article we will get to know that how can we recover deleted data if it happens accidently. We really can recover deleted rows if we know the time when data is deleted by using the transaction log.
In a recent question (https://www.experts-exchange.com/questions/28997919/Pagination-in-Adobe-Acrobat.html) here at Experts Exchange, a member asked how to add page numbers to a PDF file using Adobe Acrobat XI Pro. This short video Micro Tutorial sh…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

823 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question