multi value parameter

I've been reading the forums regarding this but don't seem to understand
exactly how this is supposed to work. I have parameters list build from
query. Report Parameter is set to multi value. The SP that the report uses
has line: PARAMETER IN (@.Parameter) in the WHERE clause. When I run the
report and choose 'select all' I get no results though if I select just one,
it works fine. Selecting more than one also returns no result.
What can I possibly be doing wrong?SQL 2005, SP2
"brian" wrote:
> I've been reading the forums regarding this but don't seem to understand
> exactly how this is supposed to work. I have parameters list build from
> query. Report Parameter is set to multi value. The SP that the report uses
> has line: PARAMETER IN (@.Parameter) in the WHERE clause. When I run the
> report and choose 'select all' I get no results though if I select just one,
> it works fine. Selecting more than one also returns no result.
> What can I possibly be doing wrong?|||You answered yourself but unfortunately you answered incorrectly. Here is my
stock answer for this:
What doesn't work has nothing really to do with RS but has to do with Stored
Procedures in SQL Server. You cannot do the following in a stored procedure.
Let's say you have a Parameter called @.MyParams
Now you can map that parameter to a multi-value parameter but if in your
stored procedure you try to do this:
select * from sometable where somefield in (@.MyParams)
It won't work. Try it. Create a stored procedure and try to pass a
multi-value parameter to the stored procedure. It won't work.
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
inner join charlist_to_table(@.STO,Default)f on b.sto = f.str
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
One other option is to create dynamic SQL in your stored procedure as well.
Bruce Loehle-Conger
MVP SQL Server Reporting Services
"brian" <brian@.discussions.microsoft.com> wrote in message
news:F270F0D4-6551-444A-9711-E5B0FE938063@.microsoft.com...
> SQL 2005, SP2
> "brian" wrote:
>> I've been reading the forums regarding this but don't seem to understand
>> exactly how this is supposed to work. I have parameters list build from
>> query. Report Parameter is set to multi value. The SP that the report
>> uses
>> has line: PARAMETER IN (@.Parameter) in the WHERE clause. When I run the
>> report and choose 'select all' I get no results though if I select just
>> one,
>> it works fine. Selecting more than one also returns no result.
>> What can I possibly be doing wrong?|||Way over my head; I have more reading to do. Thanks Bruce.
"Bruce L-C [MVP]" wrote:
> You answered yourself but unfortunately you answered incorrectly. Here is my
> stock answer for this:
> What doesn't work has nothing really to do with RS but has to do with Stored
> Procedures in SQL Server. You cannot do the following in a stored procedure.
> Let's say you have a Parameter called @.MyParams
> Now you can map that parameter to a multi-value parameter but if in your
> stored procedure you try to do this:
> select * from sometable where somefield in (@.MyParams)
> It won't work. Try it. Create a stored procedure and try to pass a
> multi-value parameter to the stored procedure. It won't work.
> 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
> inner join charlist_to_table(@.STO,Default)f on b.sto = f.str
> 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
> One other option is to create dynamic SQL in your stored procedure as well.
>
> --
> Bruce Loehle-Conger
> MVP SQL Server Reporting Services
>
> "brian" <brian@.discussions.microsoft.com> wrote in message
> news:F270F0D4-6551-444A-9711-E5B0FE938063@.microsoft.com...
> > SQL 2005, SP2
> >
> > "brian" wrote:
> >
> >> I've been reading the forums regarding this but don't seem to understand
> >> exactly how this is supposed to work. I have parameters list build from
> >> query. Report Parameter is set to multi value. The SP that the report
> >> uses
> >> has line: PARAMETER IN (@.Parameter) in the WHERE clause. When I run the
> >> report and choose 'select all' I get no results though if I select just
> >> one,
> >> it works fine. Selecting more than one also returns no result.
> >>
> >> What can I possibly be doing wrong?
>
>