Can we change parameter descriptions in Selection Criteria. YES we can!

Question

Dear All,
I have been struggling some time on some way to change the parameter descriptions in the Query - Selection Criteria screen.
While doing numerous tests on trial-and-error, I accidentally hit upon a solution which appears to work!
To change a parameter description, we simply have to reverse the order in which the WHERE clause is written.
Please refer to the Query below:
I used Customization Tools to create a UDT called @SCANNING
and a UDF called U_ourref
          Title   : ourref
          Description : Our Reference
If I use WHERE clause the conventional way, ie
WHERE
T1.[ImportLog] = @ourref
I get the following Selection Criteria screen:
Query - Selection Criteria Screen
Import Log         .........................
[OK]   [Cancel]
If I write WHERE clause by interchanging the 2 sides of the equality, i.e
WHERE
@ourref = T1.[ImportLog]
I get this screen:
Query - Selection Criteria Screen
Our Reference         .........................
[OK]   [Cancel]
Well! Is this not a way of changing the parameter description?
And it works!
My Problem
The solution is nice. However, I wanted to use LIKE instead of EQUAL TO
in order to allow Query to search for similar items.
With the conventional clause, I can use '%[%1]%' in declaration and LIKE in the WHERE clause.
With the reverse clause, I cannot figure out how to do it.
Could anybody help?
Thanks
Leon Lai
declare @ourref nvarchar (30)
set @ourref =
/*select T2.U_ourref FROM [dbo].[@SCANNING] T2 where T2.U_ourref*/ '[%1]'
SELECT
T0.[TaxDate] AS 'Doc Dt',
T0.[DocNum] AS 'SAP Ref.',
T0.[CardName]  AS 'Supplier Name',
T0.[DocTotal]  AS 'Amount',
T1.[ImportLog] AS 'Our Ref',
T1.[BlockNum]  AS 'Reqn No.'
FROM [dbo].[OPCH] T0
INNER JOIN [dbo].[PCH1] T1 ON T0.[DocEntry] = T1.[DocEntry]
INNER JOIN [dbo].[OJDT] T2 ON T0.[TransID] = T2.[TransID]
WHERE
@ourref = T1.[ImportLog]

Answer 1

Dear István Korös  ,
My main concern was modifying the Parameter Description in the Selection Criteria Screen.
I certainly tried your suggestion, and it works, but unless I modified the WHERE Clause
from :
T1.[ImportLog].@ourref
to:
@ourref = T1.[ImportLog]
the Selection Criteria screen shows:
Query - Selection Criteria Screen
Import Log         .........................
[OK]   [Cancel]
It is only after I have 'primed' the system by using:
WHERE
@ourref = T1.[ImportLog]
that the Parameter Description changes to:
Query - Selection Criteria Screen
Our Reference         .........................
[OK]   [Cancel]
I can then use your line:
WHERE T1.[ImportLog] like '%'@ourref'%'
without any problem. The amended Parameter Description remains!
I noticed something strange:
Once I have 'primed' the system, it always shows the amended description on the Selection screen!
Before priming, it always showed the system description.
Don't know why?
Anyway, I found a trick to 'prime' the system in all my queries to make sure the amended name appears
on the Selection screen. I write:
WHERE
(@ourref    = T1.[ImportLog] OR
T1.[ImportLog] like '%'@ourref'%')
The first line is just for priming to ensure the Parameter Name will be changed.
The 2nd line is the correct code to use.
With this trick, we can change the Parameter Descriptions to whatever name we want.
The only problem is that you lose the function List of available values.
Thanks a lot,
Leon Lai