dynamic query

Hello friends,

I want to create a dynamic query based on input of the parameter.

If the user passes nothing then all fields should be displayed else use query based on parameter.

I had view sample of MSDN ,but I got error [BC30203].

Is there another way to it ?Please help.

I use:

= iif(Parameters!SQLQuery.Value<>"",Parameters!SQLQuery.Value,"SELECT somecolumn from sometable") as "select statement"

and provide a query in the SQLQuery-Parameter..

You could also use:

= iif(Parameters!SomeID.Value<>"","SELECT somecolumn from sometable where id=" & Parameters!SQLQuery.Value,"SELECT somecolumn from sometable where id=123")

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Thanks For Your Reply

But I m still confusing.

I had used the iif (condition) in the generic query designer but i cannot retrive the fields which I want from the query.

The Query is executing but the data set does not contain any fields.

for eg:

="Select Idnummer,.....

iif(parameter is null,nothing,"AND ART IN ( " & parameter.value & ")")

Please reply sooner.

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You can't check your query anymore, thats right. When writing the query as ="select .. " & some_condition .. Hitting the "!"-Button has no effect.. This statement is evaluated at runtime.. So, you have to go to Preview-Mode and check if the result looks right..

If you are missing the Fields!.. for report design, the easiest way is to execute a "normal" sql-statement once (this will add the fields) and then transform your sql-string..

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Dynamic query should be avoided wherever possible. It is much harder to do (as you have seen).

I do this, I have a parameter that says All and returns a value of All (it could also return a number if a number field, just make it a value that does not exist in the database.

Do this:

selct * from sometable where (somefield = @.MyParam or @.MyParam = 'All') and ...

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I dunno if this is better, but should do the same thing:

The query will be:

select * from TableName
where FieldName LIKE (CASE WHEN @.param IS NULL THEN '%' ELSE @.param END)

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Hello Sir,

How can I implement "ALL" in my parameter

The table field does not contain 'ALL" .

If the parameter selected is 'ALL',then query should execute with the parameter contaning 'ALL' the values.Then my problem could be solve if the parameter contains 'ALL'.

please give a sample to implement 'ALL' in my parameter and in query.

Please reply soon.

Thanks

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u can use the query in this way,

SELECT AreaName, AreaCode
FROM Area
UNION
SELECT ' All' AS Areaname, '' AS AreaCode
ORDER BY AreaName

This will add 'All' n ur drop down box n using case statement in query u can get the desired results.

regards

Satyendra