SSRS多选参数错误

Question

I have a project that I need to add a param to that accepts multiple values. While this should sound pretty easy it is not working.

Here is the param: @queue_group varchar(100)

And here is how it is used: and g.extension in (@queue_group)

Now when I manually do it like so: and g.extension in ('700', '702') it works just fine. I have to make the numbers a string because of how the column was setup it has some string values in it such as *86 that breaks when I just do 700, 702 .

Now I set up the param in SSRS giving it available values and allowing multiple select but every time it doesn't work because it can't find any results. The ultimate error is a divide by zero which is because it isn't finding any records.

How can I make SSRS mimic my manual behavior of '700', '702' which when I remove the param and enter that manually it runs just fine.

In SSRS I've tried Available Values CS = 700, CS = '700', CS = =Cstr(700) and CP = 702, CP = '702', CP = =CStr(702) .

I've now tried setting up a table and using that as the defined values for the parameter. It now works when I select a single option and returns results. whenever I select 2 it returns me 0 results.

I'm at a loss.

Answer 1

SSRS can support multi-value parameters without much extra work so long as the dataset is in ssrs.

Here is a link to the tech net on it: https://technet.microsoft.com/en-us/library/aa337396(v=sql.105).aspx

What happens is that SSRS passes the whole query to the sql compiler, this means that the replacement of the parameter with the multi-value string happens before compile. So I don't think that's the problem, because If it were an error in the way the multi-value param was presenting the data to the compiler it would not be a divide by zero.

Instead I'm thinking this has to do with how the parameter is populated. You have the param set to a text field, so people are expected to enter their own values. However SSRS handles the formating for a text field before it's sent to compile, and I'm guessing that's what tripping you up.

If you enter "402,407" without the quotes into the param at compile time it will be transformed into:

and g.extension in ('402,407')

That would not return any results. If this is just a report you use, you could enter: "402','407" without the double quotes and at compile time it would transform it too:

 and g.extension in ('402','407')

The better solution would be to create a data set for the param, set the parameter to use that data set as it's list of available values, and check the multi-value property for the param. That way you would select multiple values from a drop down, and the user wouldn't have to mess with the string formatting.