I have a query :
Exec 'Select * From Receiving Where Code In (' + @pCode + ')'
@pCode will contain more than one string parameter, eg : A1, A2, A3
How can i write that parameters, I try use :
set @pCode='A1','A2 ','A3'
but get an error : Incorrect syntax near ','
Please help me
Thanks
Jul 23 '05
10  125461 
[posted and mailed, please reply in news]
Akash Kava (ac****@hotmail .com) writes: Even I was looking for same and I found a great method to overcome your
problem. Trick is not to use IN clause and use the strings functions.
So the easiest way to think is wherever you write
( Column IN (@Params) )
you just replace above peice of code with
( CHARINDEX( QUOTENAME( Column , '''' ), @Params)<> -1 )
Background:
if you want to find out wheather "b" exists in a,b,c or not use this.
@Params = "a,b,c"
CHARINDEX( Column , @Params ) <> -1
this will turn on true if column has a , b or c in it.
Warning! This method have serious performance problems, even with
short lists. First of all any index on Column will not be used.
But even if the column is not indexed - in which case this does not
matter - this operation is very expensive. When I ran performance
tests a couple of years ago on various methods, a list that was
around 255 character long cause a search to take 40 seconds!
That test, as well as several other - and better! - methods to tackle
this problem is described in an article on my web site. See http://www.sommarskog.se/arrays-in-sql.html.
--
Erland Sommarskog, SQL Server MVP, es****@sommarsk og.se
Books Online for SQL Server SP3 at http://www.microsoft.com/sql/techinf...2000/books.asp This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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