Listbox

I have a report with a single parameter, named param1. The parameter is
a list box that accepts multiple values.
When I select a single value from a listbox, the report works fine, But
when I select more than one value, the stored procedure call fails
saying '[Query execution failed for data set 'XXX' Must decalare the
variable '@.param1'.]'
I initially assumed that the multiple values would be passed to my SP
in the form of a single comma-delimited varchar, but this does not
seems to be the case. How can I set up the stored procedure call to
take multiple values from a listbox? Do I need to do something special
in the SP to process the multiple values?Hi,
you will have to write your query like this here:
WHERE SomeColumn IN (@.parametername)
HTH, Jens K. Suessmeyer.
--
http://www.sqlserver2005.de
--|||It is passed the way you suppose. But, try calling your stored procedure
yourself (not from Reporting Services). Manually pass it a comma separated
string for the parameter. It won't work. This is a stored procedure issue,
not a Reporting Services issue. If you have the query defined in RS you can
do like this: select * from sometable where somefield in (@.MyParam) but you
cannot do this if that statement is in a stored procedure.
What you can do is to have a string parameter that is passed as a multivalue
parameter and then change the string into a table.
This technique was told to me by SQL Server MVP, Erland Sommarskog
For example I have done this
select * from sometable where somefield in (select str from
charlist_to_table(@.MyParam,Default))
So note this is NOT an issue with RS, it is strictly a stored procedure
issue.
Here is the function:
CREATE FUNCTION charlist_to_table
(@.list ntext,
@.delimiter nchar(1) = N',')
RETURNS @.tbl TABLE (listpos int IDENTITY(1, 1) NOT NULL,
str varchar(4000),
nstr nvarchar(2000)) AS
BEGIN
DECLARE @.pos int,
@.textpos int,
@.chunklen smallint,
@.tmpstr nvarchar(4000),
@.leftover nvarchar(4000),
@.tmpval nvarchar(4000)
SET @.textpos = 1
SET @.leftover = ''
WHILE @.textpos <= datalength(@.list) / 2
BEGIN
SET @.chunklen = 4000 - datalength(@.leftover) / 2
SET @.tmpstr = @.leftover + substring(@.list, @.textpos, @.chunklen)
SET @.textpos = @.textpos + @.chunklen
SET @.pos = charindex(@.delimiter, @.tmpstr)
WHILE @.pos > 0
BEGIN
SET @.tmpval = ltrim(rtrim(left(@.tmpstr, @.pos - 1)))
INSERT @.tbl (str, nstr) VALUES(@.tmpval, @.tmpval)
SET @.tmpstr = substring(@.tmpstr, @.pos + 1, len(@.tmpstr))
SET @.pos = charindex(@.delimiter, @.tmpstr)
END
SET @.leftover = @.tmpstr
END
INSERT @.tbl(str, nstr) VALUES (ltrim(rtrim(@.leftover)),
ltrim(rtrim(@.leftover)))
RETURN
END
GO
Bruce Loehle-Conger
MVP SQL Server Reporting Services
"melishbd" <melissa@.hbdc.com> wrote in message
news:1169581326.626144.35060@.v45g2000cwv.googlegroups.com...
>I have a report with a single parameter, named param1. The parameter is
> a list box that accepts multiple values.
> When I select a single value from a listbox, the report works fine, But
> when I select more than one value, the stored procedure call fails
> saying '[Query execution failed for data set 'XXX' Must decalare the
> variable '@.param1'.]'
> I initially assumed that the multiple values would be passed to my SP
> in the form of a single comma-delimited varchar, but this does not
> seems to be the case. How can I set up the stored procedure call to
> take multiple values from a listbox? Do I need to do something special
> in the SP to process the multiple values?
>