To Split Or Not To Split

May 9, 2007

I have a database with a "large" table containing date based information Basically they're reservations. I've thought about creating a new table and adding any records from past years to this table. For the most part only current reservation need to be searchable, but in some circumstances it would be useful to be able to search through the archive too. so, my questions!!!

Is 8,000 or so rows of data "large" and unwieldly in SQL terms?

Would splitting this data into 2 tables - one small table for current and future reservations and one larger archive table then using a UNION SELECT query to make archive information seachable be a significant improvment on server resources/load or am I making the whole thing more complicated than it need be as 8,000 rows of data is nothing to worry about.............

What did they say about a little bit of knowledge being a dangerous thing?

Thanks in advance of any guidance to a neophyte!!?

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Name Split

Feb 16, 2005

Quick question.

I've got a CHAR (70) field called NAME that has a first and last name separated by a space. I want to split it into two fields FIRST and LAST -- with all the characters to the left of the space a first name and all the characters to the right of the space as last name. I couldn't find a string function that would let me do this simply (it may be right in front of me and I missed it).

Thanks in advance.

Ray

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Jul 14, 2007

Hi to all

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Now I want to split the whole pass value by “,�
And fire one for loop to store value in database
This things is done in asp.net web form but I want to do all process in sp
So please guide me how I am write sp .
The purpose is pass value one time so connection time is decrees and give fast perforce

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SPLIT() UDF

Jan 8, 2008

SQL UDF split()

The objective of this article is to help the SQL developers with an UDF that can be used within a stored procedures or Function to split a string (based on given delimiter) and extract the required portion of the string.

Scripting languages like VB script and Java script have in-built split() functions but there is no such function available in SQL server. In my experience this function is really handy when you’re working on an ASP application with SQL server as backend, whereby you’ll need to pass the ASP page submitted values to the SQL stored procedure.

To give a simple example, in a typical Monthly reporting ASP page – the users would select a range of months and extract the information pertaining to this date range. Classic implementation of this model is to have an ASP page to accept the input parameters and pass the values to the SQL stored procedure (SP). The SP would return a result set which is then formatted in the ASP page as results.

If the date range is continuous ie. JAN07 to MAR07 then the SP can typically accept a ‘From’ and ‘To’ range variables. But I’ve encountered situations whereby the users select 3 months from the current year and 2 months from previous year (non-continuous date ranges). In such scenario the SP cannot have a date range as input parameters.

Typically an ASP programmer would do is by having a single date input parameter in the SP and call the SP within a loop in the ASP page. This is an inefficient way of programming as contacting the database server within an ASP loop could cause performance overhead especially if the table being queried is an online transaction processing table.

Here is how I handled the above situation.

1.Declared one string input parameter of type varchar(8000) (if you’re using SQL 2005 then it is advisable to use Varchar(Max))
2.Pass the ASP submitted values as string, in this case the months selected by user would be supplied to the SP as a string
3.Within the Stored Procedure I’ll call the split() function to extract each month from the string and query the corresponding data

The basic structure of the stored procedure is as pasted below:-

CREATE PROCEDURE FETCH_SALES_DETAIL (
@MONTH VARCHAR(MAX)
)
AS
BEGIN
DECLARE @MONTH_CNT INT,@MTH DATETIME
SET @MONTH_CNT=1
WHILE DBO.SPLIT(@MONTH,',',@MONTH_CNT) <> ''
BEGIN
SET @MTH = CAST(DBO.SPLIT(@MONTH,',',@MONTH_CNT) AS DATETIME)
--<<Application specific T-SQLs>>-- (BEGIN)
SELECT [SALES_MONTH],[SALES_QTY],[PRODUCT_ID],[TRANSACTION_DATE]
FROM SALES (NLOCK)
WHERE [SALES_MONTH]= @MTH
--<<Application specific T-SQLs>>--(END)

SET @MONTH_CNT=@MONTH_CNT+1
END
END

Dbo.SPLIT() function takes 3 parameters
1)The main string with the values to be split
2)The delimiter
3)The Nth occurrence of the string to be returned

The functionality of the UDF is as explained STEP by STEP:

1.Function Declaration
CREATE FUNCTION [dbo].[SPLIT]
(
@nstring VARCHAR(MAX),
@deliminator nvarchar(10),
@index int
)

RETURNS VARCHAR(MAX)

Function is declared with 3 input parameters:-
@nstring of type VARCHAR(MAX) will hold the main string to be split
@deliminator of type NVARCHAR(10) will hold the delimiter
@index of type INT will hold the index of the string to be returned
2.Variable Declaration
DECLARE @position int
DECLARE @ustr VARCHAR(MAX)
DECLARE @pcnt int

Three variables are needed within the function. @position is an integer variable that will be used to traverse along the main string. @ustr will store the string to be returned and the @pcnt integer variable to check the index of the delimiter.
3.Variable initialization
SET @position = 1
SET @pcnt = 1
SELECT @ustr = ''
Initialize the variables
4.Main functionality
WHILE @position <= DATALENGTH(@nstring) and @pcnt <= @index
BEGIN
IF SUBSTRING(@nstring, @position, 1) <> @deliminator BEGIN
IF @pcnt = @index BEGIN
SET @ustr = @ustr + CAST(SUBSTRING(@nstring, @position, 1) AS nvarchar)
END
SET @position = @position + 1
END
ELSE BEGIN
SET @position = @position + 1
SET @pcnt = @pcnt + 1
END
END

4.1The main while loop is used to traverse through the main string until the word index is less than or equal to the index passed as input parameter.
4.2Within the while loop each character within the string is verified against the delimiter and if it does not match then local word count variable is checked against the input index parameter
4.3If the values are same ie., the input variable index and the word being processed in the while loop are the same then the word is stored in the @ustr variable. If the values does not match then the @position variable is incremented.
4.4If the character matches with the delimiter then the word count variable @pcnt is incremented along with the @position variable

5.Return the value
RETURN @ustr

I hope this article would benefit those who are looking for a handy function to deal with Strings.

Feel free to send your feedback at dearhari@gmail.com

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Feb 4, 2008

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Please help in writing the split function to get the values of each checkboxes and dropdowns from the string in order to save them in separate columns.

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Jan 28, 2004

Hi,

Is it possible to split the following value in sql server ?

I have the value like 25 Email Accounts,50 Email Accounts in my sqlserver database.
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I am using ASP.Net and C# backend is SQL Server 2000.

Thanks and Regards
Arul

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Mar 21, 2001

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Now coming to the question at present I have one procedure that does all these things. Should I split up the procedure and have three procedures handling the events seperately: 1 Insert 2 Delete 3 update The reason I am concerned is 1 procedure being hit so many times by concurrent users with varying events. I am concerned about performance issue and slowing down of the page. I do not have exact numbers of users at this point. But they would be in thousands or more. Thanks for any suggestions or advice you all might have to share. Hiku

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What I have is a table with a primary key. Then I have 5 other tables with a relating key. No problems there.

I need to create a relationship with the primary table (primary) key who's data field is 25 charachters. I need to parse that out and have 3 charachters go to one, 2 to the other and so on.

I don't know how to do that, can you help?

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Nov 28, 2002

Hi I need a stored procedure in SQL that will split a comma separated variable passed to it
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First attempt is dreadfully slow as I am opening recordsets each time

Function func_getFood()
Dim rsfoodsql
Dim foodoutput
for x=1 to ubound(masterfoodarray)-2
set rsfoodsql= objconn.execute ("select foodname from tbl"&language&"food where foodID='"& masterfoodarray(x) &"'")
if not rsfoodsql.eof then
foodoutput=rsfoodsql("foodname")
if not foodoutput="" then
response.write foodoutput&"<BR>"
end if
end if
next
End Function

Hope someone can help,
cheers

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Nov 4, 2004

Hi everybody

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eg
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userid(field)

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i want to get data as

userid userid
1 21
2 22
3 23
. .
. .
. .
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Sep 27, 2005

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Oct 29, 2007

Hi
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following is the base table

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insert into #sample values (2,'ccc,ddd')
insert into #sample values (3,'aab')

& i need the attached output

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SOPNUMBER TAX TOTAL
14-123456 $500.00

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Apr 7, 2008

Hi

I have tried like this. but I cant execute my SP it ended up with errors.

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print @FirstLetter
END

SELECT
P.PUB_ID AS ''PubId'',
P.PUB_TITLE AS ''PubTitle''

FROM HDS_PUBLICATION P
INNER JOIN HN_IM_JOIN IM
ON IM.PUB_UNID = P.PUB_UNID,
HDS_CUSTOM C,
WD_PUBLIC_SHELF S,
HDS_TOPIC T
WHERE P.PUB_UNID = C.PUB_UNID AND C.CUSTOM3 = ''False''
AND P.PUB_ID = S.PUB_ID
AND P.PUB_UNID = T.PUB_UNID
AND S.Audience = ''Public''
' + @FilterByLang + '
ANDP.PUB_TITLE LIKE '+ @FirstLetter +'''%''' +'

EXEC SP

Any one please clear me

Thanks,
shakthiA

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Jun 4, 2008

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any one know help me

Regards,
Prabu R

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Jun 4, 2008

I have the following:

iddocidgroupidOption
48986111235
353973334
2314820112346

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iddocidgroupidOption
48986111
48986112
48986113
48986115
35397333
35397334
231482011
231482012
231482013
231482014
231482016

thanks you

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Sep 7, 2013

A#B#C
A#B
A#B#C#D

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I need output:

Column1 Column2 Column3 Column4
A B C
A B
A B C D

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Apr 8, 2015

I have data like 'US.USA.Florida.Miami'. I need to split this string as below

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=========== ========= ========= ============
US USA Florida Miami

Delimiter is dot '.'.

Is there any chance to do this using the sql server built in functions.

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Nov 3, 2006

hai friends,
please help me.Here is my doubt

In a table I have fields like this TABLE NAME : table1
COLUMN NAME : ids
----------------
ids
-----------------
1,3,4
3,4
3
7,1
1
11
6
6,7
1

i want to get all the ids used i.e., 1,2,3,6,7,11

i want to update another table based on the id, which are not listed here.

I am doing like below

declare @IDs varchar(200)
select IDs=ids from table1
update table where(id not in(select ID from timeSplitter(@IDs)))

please help me.it is urgent
thanks in advance
bye
pavansagar





pavansagar

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Mar 21, 2007

My company use SQL server 2005 standard. considering deal with huge data, how if we want to split data (date range yearly or monthly) in order to ease transaction. that's simply for us to use query, but how if we want to split data that can be easily execute by operator (non-admin privilege). Is there any another way?

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Aug 21, 2007

not sure if this is possible...

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select products, stock from table

and my rs is

chair | 1
couch | 3
lamp | 2

is there anyway in the select to make any row that has stock of more than 1 to make a new row... so my rs would come back as

chair
couch
couch
couch
lamp
lamp

Any info would be helpful...

Thanks,

~ moe

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Feb 21, 2008

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Jul 23, 2005

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Aug 21, 2006



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Oct 24, 2007



Hello Group

Can somebody guide me on the prefered standards of doing this

I have a Colunm in a table having both NULLS and some data

Ex:
Table 1
Col1 Col2
--------------------------
1 MSDN
2 Forum
3 NULL
4 NULL
5 Condition
6 Split
7 NULL

I want to move the data from this tabel to two different table depending upon the value in Col2


Table2
Col1 Col2
--------------------------
1 MSDN
2 Forum
5 Condition
6 Split


Table 3
Col1 Col2
--------------------------
3 NULL
4 NULL
7 NULL


For doing this I used a simple Conditional Split Task after table 1
First Approach
Output Name; Null Data Condition: ISNULL(Col2)

I routed the output Null Data to Table3 and the default to Table2.

Strangely I see some data in Table3 which is not NULL. That is Table 3 is having a data which is not equal to null in Col2.
I have no clue why will it do that.


Second approach
Output Name: Data, Condition: !(ISNULL(Col2))

I routed the output: Data to Table2 and the default to Table3.

Strangely I see some data in Table3 which is not NULL. That is Table 3 is having a data which is not equal to null in Col2.



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http://www.webfound.net/split_on_headerid.jpg

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Nov 5, 2007



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LTRIM(PatientCity) != "Wichita Falls" && (PatientZip == "76301" || PatientZip == "76302" || PatientZip == "76305" || PatientZip == "76306" || PatientZip == "76307" || PatientZip == "76308" || PatientZip == "76309" || PatientZip == "76310")

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Other Details: I'm going to use Web Merge Replication to replicate filtered data to 500 customers.

QUESTION:
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