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Make Sequential numbers into ranges Expand / Collapse
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Posted Monday, August 27, 2012 6:06 PM
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I have a data look like this -
Note: have to be breakdown per TNID field

TNID TN
3011170 4402787100
3011170 4402787101
3011170 4402787102
3011170 4402787103
3011171 4402787104
3011171 4402787105
3011175 4402787118
3011175 4402787119
3011175 4405165555
3011175 4405165556
3011175 4405165557
3011175 4405165558
3011175 4409447976

How to write a T-SQL that the output will in ranges -

TNID TN1 TN2
3011170 4402787100 4402787103
3011171 4402787104 4402787105
3011175 4402787118 4402787119
3011175 4405165555 4405165558
3011175 4409447976 4409447976

Thanks in advance.
Post #1350652
Posted Monday, August 27, 2012 6:52 PM


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This should work in SQL 2000:

CREATE TABLE #Temp
(TNID INT, TN VARCHAR(20))

INSERT INTO #Temp
SELECT 3011170, '4402787100'
UNION ALL SELECT 3011170, '4402787101'
UNION ALL SELECT 3011170, '4402787102'
UNION ALL SELECT 3011170, '4402787103'
UNION ALL SELECT 3011171, '4402787104'
UNION ALL SELECT 3011171, '4402787105'
UNION ALL SELECT 3011175, '4402787118'
UNION ALL SELECT 3011175, '4402787119'
UNION ALL SELECT 3011175, '4405165555'
UNION ALL SELECT 3011175, '4405165556'
UNION ALL SELECT 3011175, '4405165557'
UNION ALL SELECT 3011175, '4405165558'
UNION ALL SELECT 3011175, '4409447976'

SELECT TNID, TNMIN=MIN(TN), TNMAX=MAX(TN)
FROM #Temp
GROUP BY TNID

DROP TABLE #Temp





My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
Post #1350655
Posted Tuesday, August 28, 2012 11:15 AM
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I tried your query but it came out like this. The 3rd row is not correct.
TNID TNMIN TNMAX
3011170 4402787100 4402787103
3011171 4402787104 4402787105
3011175 4402787118 4409447976

here's the missing recs:
TNID TN1 TN2
3011175 4402787118 4402787119
3011175 4405165555 4405165558
3011175 4409447976 4409447976

Thanks for trying . Anyone out there have other ideas.
Post #1351134
Posted Tuesday, August 28, 2012 11:20 AM


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Since the data depends on sequentiality, which isn't a property of relational data, you'll need a non-relational solution. That means a simple cursor.

Step through the rows, if the TN increments by more than 1, or the TNID changes to a new value, insert the new values into a temp table as the start-range value, and update the prior row of the temp table with the last value, as the end-of-range. Then select from the temp table.


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Post #1351140
Posted Tuesday, August 28, 2012 11:36 AM


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Here is my shot at the solution.


CREATE TABLE #Temp
(TNID INT, TN BIGINT);

INSERT INTO #Temp
SELECT 3011170, 4402787100
UNION ALL SELECT 3011170, 4402787101
UNION ALL SELECT 3011170, 4402787102
UNION ALL SELECT 3011170, 4402787103
UNION ALL SELECT 3011171, 4402787104
UNION ALL SELECT 3011171, 4402787105
UNION ALL SELECT 3011175, 4402787118
UNION ALL SELECT 3011175, 4402787119
UNION ALL SELECT 3011175, 4405165555
UNION ALL SELECT 3011175, 4405165556
UNION ALL SELECT 3011175, 4405165557
UNION ALL SELECT 3011175, 4405165558
UNION ALL SELECT 3011175, 4409447976;

with rCTE as (
select
row_number() over (order by (select null)) rn,
t1.TNID,
t1.TN
from
#Temp t1
left outer join #Temp t2
on t1.TNID = t2.TNID and t1.TN = t2.TN + 1
where
t2.TNID is null
union all
select
rn,
t1.TNID,
t1.TN
from
#Temp t1
inner join rCTE t2
on t1.TNID = t2.TNID and t1.TN = t2.TN + 1
)
select TNID, min(TN) TN1, max(TN) TN2 from rCTE group by rn, TNID order by rn,TNID;

go

drop table #Temp;
go





Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
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Managing Transaction Logs

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Post #1351149
Posted Tuesday, August 28, 2012 11:54 AM


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Lynn Pettis (8/28/2012)
Here is my shot at the solution.


CREATE TABLE #Temp
(TNID INT, TN BIGINT);

INSERT INTO #Temp
SELECT 3011170, 4402787100
UNION ALL SELECT 3011170, 4402787101
UNION ALL SELECT 3011170, 4402787102
UNION ALL SELECT 3011170, 4402787103
UNION ALL SELECT 3011171, 4402787104
UNION ALL SELECT 3011171, 4402787105
UNION ALL SELECT 3011175, 4402787118
UNION ALL SELECT 3011175, 4402787119
UNION ALL SELECT 3011175, 4405165555
UNION ALL SELECT 3011175, 4405165556
UNION ALL SELECT 3011175, 4405165557
UNION ALL SELECT 3011175, 4405165558
UNION ALL SELECT 3011175, 4409447976;

with rCTE as (
select
row_number() over (order by (select null)) rn,
t1.TNID,
t1.TN
from
#Temp t1
left outer join #Temp t2
on t1.TNID = t2.TNID and t1.TN = t2.TN + 1
where
t2.TNID is null
union all
select
rn,
t1.TNID,
t1.TN
from
#Temp t1
inner join rCTE t2
on t1.TNID = t2.TNID and t1.TN = t2.TN + 1
)
select TNID, min(TN) TN1, max(TN) TN2 from rCTE group by rn, TNID order by rn,TNID;

go

drop table #Temp;
go




You'll run into maxrecursion issues if the actual data has any significant size to it at all, with this solution.


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Post #1351157
Posted Tuesday, August 28, 2012 12:06 PM


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GSquared (8/28/2012)
Lynn Pettis (8/28/2012)
Here is my shot at the solution.


CREATE TABLE #Temp
(TNID INT, TN BIGINT);

INSERT INTO #Temp
SELECT 3011170, 4402787100
UNION ALL SELECT 3011170, 4402787101
UNION ALL SELECT 3011170, 4402787102
UNION ALL SELECT 3011170, 4402787103
UNION ALL SELECT 3011171, 4402787104
UNION ALL SELECT 3011171, 4402787105
UNION ALL SELECT 3011175, 4402787118
UNION ALL SELECT 3011175, 4402787119
UNION ALL SELECT 3011175, 4405165555
UNION ALL SELECT 3011175, 4405165556
UNION ALL SELECT 3011175, 4405165557
UNION ALL SELECT 3011175, 4405165558
UNION ALL SELECT 3011175, 4409447976;

with rCTE as (
select
row_number() over (order by (select null)) rn,
t1.TNID,
t1.TN
from
#Temp t1
left outer join #Temp t2
on t1.TNID = t2.TNID and t1.TN = t2.TN + 1
where
t2.TNID is null
union all
select
rn,
t1.TNID,
t1.TN
from
#Temp t1
inner join rCTE t2
on t1.TNID = t2.TNID and t1.TN = t2.TN + 1
)
select TNID, min(TN) TN1, max(TN) TN2 from rCTE group by rn, TNID order by rn,TNID;

go

drop table #Temp;
go




You'll run into maxrecursion issues if the actual data has any significant size to it at all, with this solution.


True, and I didn't ad the option to cap it either, but it was my first shot. I am looking at some other alternatives as well.



Lynn Pettis

For better assistance in answering your questions, click here
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For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

SQL Musings from the Desert Fountain Valley SQL (My Mirror Blog)
Post #1351165
Posted Tuesday, August 28, 2012 12:17 PM


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Here is another option that appears to work for the given test data:


CREATE TABLE #Temp
(TNID INT, TN BIGINT);

INSERT INTO #Temp
SELECT 3011170, 4402787100
UNION ALL SELECT 3011170, 4402787101
UNION ALL SELECT 3011170, 4402787102
UNION ALL SELECT 3011170, 4402787103
UNION ALL SELECT 3011171, 4402787104
UNION ALL SELECT 3011171, 4402787105
UNION ALL SELECT 3011175, 4402787118
UNION ALL SELECT 3011175, 4402787119
UNION ALL SELECT 3011175, 4405165555
UNION ALL SELECT 3011175, 4405165556
UNION ALL SELECT 3011175, 4405165557
UNION ALL SELECT 3011175, 4405165558
UNION ALL SELECT 3011175, 4409447976;

with basedata as (
select
TNID,
TN,
TN - row_number() over (order by TNID, TN) as grp
from
#Temp
)
select
TNID,
min(TN) as TN1,
max(TN) as TN2
from
basedata
group by
grp, TNID
;

go

drop table #Temp;
go





Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

SQL Musings from the Desert Fountain Valley SQL (My Mirror Blog)
Post #1351172
Posted Tuesday, August 28, 2012 12:24 PM


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Lynn, your solutions are great . But this is the 7,2000 forum
I wonder if that helps the OP.



Luis C.
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Post #1351178
Posted Tuesday, August 28, 2012 12:25 PM


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Now someone tells me! Time to hit the desk with my head.



Lynn Pettis

For better assistance in answering your questions, click here
For tips to get better help with Performance Problems, click here
For Running Totals and its variations, click here or when working with partitioned tables
For more about Tally Tables, click here
For more about Cross Tabs and Pivots, click here and here
Managing Transaction Logs

SQL Musings from the Desert Fountain Valley SQL (My Mirror Blog)
Post #1351179
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