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Query

vs.satheesh

SSCrazy

Points: 2392
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September 24, 2013 at 3:35 am

#277476

Dear All
I have one scnario. One column i am having Following records
1a
2a
2b
...
.
.
.
.
10a
10b
But i want following output through Query
1
2
2
.
.
.
.
10
10
.

Viewing 7 posts - 1 through 6 (of 6 total)

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Koen Verbeeck SSC Guru Points: 259115 More actions · Answer 1

Not much information to go on.

Is it only a and b in the column, or are there other characters present?

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Hunchback SSCrazy Points: 2649 More actions · Answer 2

You can use some of the string functions like CHARINDEX, PATINDEX, LEFT, SUBSTRING, etc.

Try to find the first non numeric character and extract the substring from the beginning to this position.

SELECT

T.c1,

CASE WHEN R.c1 > 1 THEN SUBSTRING(T.c1, 1, R.c1 - 1) ELSE T.c1 END AS c2

FROM

(VALUES ('1a'), ('10a'), ('110a'), ('220')) AS T(c1)

CROSS APPLY

(VALUES (PATINDEX('%[^0-9]%', T.c1))) AS R(c1);

OTF SSCertifiable Points: 6104 More actions · Answer 3

You'll have to play around with the String Functions to get what you want.

Maybe...

SELECT REVERSE(SUBSTRING(REVERSE('1a'), 2, LEN('1a')));

SQL and Strings... not exactly a match made in heaven.

Dwain Camps SSC Guru Points: 86978 More actions · Answer 4

hunchback (9/24/2013)
You can use some of the string functions like CHARINDEX, PATINDEX, LEFT, SUBSTRING, etc.
Try to find the first non numeric character and extract the substring from the beginning to this position.
SELECT
T.c1,
CASE WHEN R.c1 > 1 THEN SUBSTRING(T.c1, 1, R.c1 - 1) ELSE T.c1 END AS c2
FROM
(VALUES ('1a'), ('10a'), ('110a'), ('220')) AS T(c1)
CROSS APPLY
(VALUES (PATINDEX('%[^0-9]%', T.c1))) AS R(c1);

Mighty convoluted of you to use 2 table row constructors like that but I like it. 🙂

Borrowing the one with your sample data, I'll offer another option that is described in the 4th link in my signature.

SELECT a.c1, b.Item

FROM

(

VALUES ('1a'), ('10a'), ('110a'), ('220')

) AS a(c1)

CROSS APPLY dbo.PatternSplitCM(a.C1, '[0-9]') b

WHERE [Matched]=1;

Probably not as fast as hunchback's but that's because it's a more generalized tool.

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

ccavaco Old Hand Points: 302 More actions · Answer 5

SELECT REPLACE('2b',SUBSTRING('2b',PATINDEX('%[^0-9]%','2b'),1), '')

sribe SSC-Addicted Points: 421 More actions · Answer 6

sribe

SSC-Addicted

Points: 421

September 26, 2013 at 10:04 am

#1653649

SELECT LEFT('21b',len('21b')-1)