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Returning MAX(Value) in String


Returning MAX(Value) in String

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luissantos
luissantos
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Hello comunity

I need help to create a TSQL to return MAX(Value) removing the first part and last part.
Example
i have these Varchar Reference code:
1.00001-Q1
2.00100-Q2
3.00005-Q4

I need to cut the string to find the max number excluding (Part1):
1.
2.
3.
and also excluding (Part3:
-Q1
-Q2
-Q4
in this case converting varchar to INT, the correct value that i want is:
00101
The middle part excluding (Part1 and Part3)

Then my final reference could be:

1.00101-Q1
or
2.00101-Q2
or
3.00101-Q4

Many thanks,
Luis SAntos



Sean Lange
Sean Lange
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Points: 25897 Visits: 17517
Wow talk about sparse on details. It is hard to figure out what you are trying to do here. You really need to read up on normalization. You should NOT be storing multiple "parts" or values in a single column. This makes things far more difficult to work with.

Here is my guess based on your post:


declare @something table
(
SomeValue varchar(25)
)

insert @something
select '1.00001-Q1' union all
select '2.00100-Q2' union all
select '3.00005-Q4'

select max(cast(PARSENAME(REPLACE(SomeValue, '-', '.'), 2) as int))

from @something



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Cross Tabs and Pivots, Part 1 – Converting Rows to Columns
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs
Understanding and Using APPLY (Part 1)
Understanding and Using APPLY (Part 2)
Luis Cazares
Luis Cazares
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Points: 16327 Visits: 19067
This is a possible solution. Be sure to understand how does it work and ask any questions that you have.

SELECT Reference,
PARSENAME( r.dotted, 3) + '.' +
MAX( PARSENAME( r.dotted, 2)) OVER (PARTITION BY (SELECT NULL)) + '-' +
PARSENAME( r.dotted, 1)
FROM #SampleData s
CROSS APPLY (SELECT REPLACE( Reference, '-', '.') dotted) r




Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?


How to post data/code on a forum to get the best help: Option 1 / Option 2
luissantos
luissantos
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Group: General Forum Members
Points: 483 Visits: 749
Hello Sean and Luis

Sean and Luis , i try your scripts and they return what i need.

Many thanks,
Best regards,
Luis SAntos



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