Reporting Services ToolTips
One good feature in SQL server Reporting Services is ToolTip . It is a simple feature but has more advantages if you want to show the complete information in a report. Its a great way of saving some Reporting space.I use it when Designing Dashboards or if you want add the redundant columns like the Description fields.
Here is an example from AdventureWorks.
SQL script
SELECT
pp.ProductLine,
pp.ProductNumber,
pp.Name ,
pp.Class ,
pp.Color ,
pp.FinishedGoodsFlag ,
pp.ListPrice ,
pp.Style ,
pd.Description AS [Description] ,
psc.Name AS SubCategoryName ,
pc.Name AS CategoryName
FROM Production.ProductDescription pd
JOIN Production.ProductModelProductDescriptionCulture pmpdc
ON pd.ProductDescriptionID = pmpdc.ProductDescriptionID
JOIN Production.Product pp ON pp.ProductModelID = pmpdc.ProductModelID
JOIN Production.ProductSubcategory psc
ON psc.ProductSubcategoryID = pp.ProductSubcategoryID
JOIN Production.ProductCategory pc
ON pc.ProductCategoryID = psc.ProductCategoryID
WHERE pmpdc.CultureID = 'en'
ORDER BY pp.Name
Report Layout

I have not included the Category and SubCategory field in the above report . Instead I have included this as ToolTip
a. Right Click on the ProductNumber Text box
b. TextBox Properties –> ToolTip

I added the following expression for Category and SubCategory

So when you hover over the ProductID, the end result is

You can do the same thing for large descriptive fields



