Need help to split Data

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Need help to split Data

abhas

SSCarpal Tunnel

Points: 4681
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December 19, 2013 at 5:43 am

#280463

Hi All,
I am having a column StartTime in my table which data looks like below.
StartTime
7:00 AM 12:30 PM
Now I need to split the above into two separate rows as below.
StartTime
7:00 AM
12:30 PM
How can I do this.
This is very urtgent please help me.
Thanks
Abhas.

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KS Hall of Fame Points: 3323 More actions · Answer 1

This might help

DECLARE @StartTime VARCHAR(MAX),@X XML

SELECT @StartTime = '7:00 AM

12:30 PM'

SELECT @X = CONVERT(XML,'' + replace(@StartTime,'','') + '')

SELECT x.i.value('.','varchar(max)') AS [StartTime]

FROM @X.nodes('//br') x(i)

KS Hall of Fame Points: 3323 More actions · Answer 2

Sowbhari (12/19/2013)
This might help
DECLARE @StartTime VARCHAR(MAX),@X XML
SELECT @StartTime = '7:00 AM
12:30 PM'
SELECT @X = CONVERT(XML,'' + replace(@StartTime,'','') + '')
SELECT x.i.value('.','varchar(max)') AS [StartTime]
FROM @X.nodes('//br') x(i)

This is the correct SQL,somehow the tags are missing in my previous post.

DECLARE @StartTime VARCHAR(MAX),@X XML

SELECT @StartTime = '7:00 AM 12:30 PM'

SELECT @X = CONVERT(XML,' ' + replace(@StartTime,' ',' ') + '')

SELECT x.i.value('.','varchar(max)') AS [StartTime]

FROM @X.nodes('//br') x(i)

higgim SSCarpal Tunnel Points: 4090 More actions · Answer 3

You could also create a function to do it:

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

CREATE FUNCTION [dbo].[fnSplitList]

(

@sInputList VARCHAR(8000),

@sDelimiter VARCHAR(10)

)

RETURNS @List TABLE ( item VARCHAR(8000) )

BEGIN

DECLARE @sItem VARCHAR(8000)

WHILE CHARINDEX(@sDelimiter, @sInputList, 0) <> 0

BEGIN

SELECT @sItem = RTRIM(LTRIM(SUBSTRING(@sInputList, 1,

CHARINDEX(@sDelimiter,

@sInputList, 0)

- 1))) ,

@sInputList = RTRIM(LTRIM(SUBSTRING(@sInputList,

CHARINDEX(@sDelimiter,

@sInputList, 0)

+ LEN(@sDelimiter),

LEN(@sInputList))))

IF LEN(@sItem) > 0

INSERT INTO @List

SELECT @sItem

END

IF LEN(@sInputList) > 0

INSERT INTO @List

SELECT @sInputList -- Put the last item in

RETURN

END

GO

From there you just do the following:

SELECT * FROM dbo.fnSplitList('7:00 AM delimiter 12:30 PM','delimiter')

Output :

item

7:00 AM

12:30 PM

You can then be flexible on your delimiters 🙂

Mitesh Oswal SSCrazy Points: 2798 More actions · Answer 4

Try with Charindex

DECLARE @StartTime VARCHAR(MAX),@X XML

SELECT @StartTime = '7:00 AM

12:30 PM'

DECLARE @tbl TABLE

(

ID INT

)

INSERT INTO @tbl

SELECT TOP 100 ROW_NUMBER() OVER(Order by s.object_id)

from sys.objects s , sys.objects si

select LTRIM(SUBSTRING(@StartTime,ID,CHARINDEX(CHAR(13),@StartTime+CHAR(13),ID))) from @tbl

where CHARINDEX(CHAR(13),CHAR(13)+@StartTime,ID)=ID

Regards,
Mitesh OSwal
+918698619998

Sean Lange SSC Guru Points: 286573 More actions · Answer 5

Everyone on this thread should take a look at the link in my signature for splitting strings. In there you will find a number of ways to split a string including the while loop and xml methods. As you continue reading you will find a tally table set based splitter. It will blow the doors off all the above methods for performance.

Another method that is super duper fast is Dwain Camp's pattern splitter. You can find it here. http://www.sqlservercentral.com/articles/String+Manipulation/94365/[/url]

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

higgim SSCarpal Tunnel Points: 4090 More actions · Answer 6

higgim

SSCarpal Tunnel

Points: 4090

December 19, 2013 at 7:33 am

#1674812

Cheers Sean. Will have a look 🙂

abhas SSCarpal Tunnel Points: 4681 More actions · Answer 7

Hi Sowbhari,

Thanks for reply but if i am using your approach, i am getting below error.

XML parsing: line 1, character 13, end tag does not match start tag

Thanks

Abhas

abhas SSCarpal Tunnel Points: 4681 More actions · Answer 8

Hi,

Sorry Sowbhari,

its working.

DECLARE @StartTime VARCHAR(MAX),@X XML

SELECT @StartTime = '7:00 AM 12:30 PM'

SELECT @X = CONVERT(XML,'

' + replace(@StartTime,' ','

') + '')

SELECT x.i.value('.','varchar(max)') AS [StartTime]

FROM @X.nodes('//br') x(i)

Thanks.

Sean Lange SSC Guru Points: 286573 More actions · Answer 9

abhas (12/19/2013)
Hi,
Sorry Sowbhari,
its working.
DECLARE @StartTime VARCHAR(MAX),@X XML
SELECT @StartTime = '7:00 AM 12:30 PM'
SELECT @X = CONVERT(XML,'
' + replace(@StartTime,' ','
') + '')
SELECT x.i.value('.','varchar(max)') AS [StartTime]
FROM @X.nodes('//br') x(i)
Thanks.

I would again recommend you look at the articles I referenced. They will perform a LOT better in most situations. Try them out and see what works for you but the DelimitedSplit8K function is crazy fast.

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

Ed Wagner SSC Guru Points: 287024 More actions · Answer 10

Sean Lange (12/19/2013)
abhas (12/19/2013)
Hi,
Sorry Sowbhari,
its working.
DECLARE @StartTime VARCHAR(MAX),@X XML
SELECT @StartTime = '7:00 AM 12:30 PM'
SELECT @X = CONVERT(XML,'
' + replace(@StartTime,' ','
') + '')
SELECT x.i.value('.','varchar(max)') AS [StartTime]
FROM @X.nodes('//br') x(i)
Thanks.
I would again recommend you look at the articles I referenced. They will perform a LOT better in most situations. Try them out and see what works for you but the DelimitedSplit8K function is crazy fast.

+1 +1 +1 This function performs better than any other string splitting function I've seen and performance is very linear as you run it with larger data sets. It requires a bit of stretching at first, but once you "get it" it'll change the way you look at data. To test it out for yourself, run both solutions up to 1,000,000 rows and compare performance.

When you're done splitting things up, you may want to consider addressing the root cause - an application (or load process) putting two values in one column. Can the user enter 3 values? How about 17 values? Once the application is fixed, you can fix the data that's there.

Tally Tables - Performance Personified
String Splitting with True Performance
Best practices on how to ask questions

Dwain Camps SSC Guru Points: 86908 More actions · Answer 11

Sean Lange (12/19/2013)
Everyone on this thread should take a look at the link in my signature for splitting strings. In there you will find a number of ways to split a string including the while loop and xml methods. As you continue reading you will find a tally table set based splitter. It will blow the doors off all the above methods for performance.
Another method that is super duper fast is Dwain Camp's pattern splitter. You can find it here. http://www.sqlservercentral.com/articles/String+Manipulation/94365/[/url]

I appreciate the vote of confidence Sean, but I think in this case I'd opt for something simpler like this:

WITH SampleData (StartTime) AS

(

SELECT '7:00 AM 12:30 PM'

UNION ALL SELECT '11:00 AM 2:30 PM'

)

SELECT StartTime, StartTimes

FROM SampleData a

CROSS APPLY

(

SELECT REPLACE(StartTime, ' ', ' ')

) b (st)

CROSS APPLY

(

VALUES(LEFT(st, CHARINDEX('M', st))),(STUFF(st, 1, CHARINDEX('M', st)+1, ''))

) c (StartTimes)

The CROSS APPLY VALUES approach to UNPIVOT is explained in the first article in my signature links.

BTW. Last name is "Camps" so possessive would be Camps' 😀

My mantra: No loops! No CURSORs! No RBAR! Hoo-uh![/I]
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?[/url]
Since random numbers are too important to be left to chance, let's generate some![/url]
Learn to understand recursive CTEs by example.[/url]
[url url=http://www.sqlservercentral.com/articles/St

Sean Lange SSC Guru Points: 286573 More actions · Answer 12

Last name is "Camps" so possessive would be Camps' 😀

Doh!!! Sorry about getting your name wrong. :blush:

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

Jeff Moden SSC Guru Points: 1003853 More actions · Answer 13

Sean Lange (12/20/2013)
Last name is "Camps" so possessive would be Camps' 😀
Doh!!! Sorry about getting your name wrong. :blush:

Dwain must have been "camping out" just waiting for you to make that mistake. I know, I know... you've both had mo-den enough of those kinds of jokes. 😛

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Jeff Moden SSC Guru Points: 1003853 More actions · Answer 14

Ed Wagner (12/19/2013)
+1 +1 +1 This function performs better than any other string splitting function I've seen and performance is very linear as you run it with larger data sets. It requires a bit of stretching at first, but once you "get it" it'll change the way you look at data. To test it out for yourself, run both solutions up to 1,000,000 rows and compare performance.

Doesn't matter how nice your are, Ed, it's still your turn to buy lunch. 😛

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)