Compare scalar value to dynamic data

I am trying to compare a scalar number input in the front panel to a dynamic data set(from DAQ) and return a boolean true if the condition is met. How can I compare one value to each data point in the acquisition data set?

You can use the Convert From Dynamic Data and convert to a 1D array. The comparsion functions work with an array as one input and a scalar as another. The output is a Boolean array - the results of each element in the array to the scalar. I think you can also use the Comparison Express VI but I have seldom used any of the Express functions so I'm not sure about that.

Similar Messages

Compare daqmx event with dynamic data

Good evening everyone!
Our project is now facing a problem with LabView.
For our project, we need to use daq to acquire current for our SOC. We want to use virtual channel so people can choose channels from the front panel directly. But when use DAQmx Virtual Channel, the task out is daqmx event which can be used for further calculation like multiple times to get our SOC, also can not compare with a constant.
Could anybody help me with this question? How can I extract the value inside the task out for DAQmx or convert daqmx event to dynamic data directly ??

So you changed your DAQ Assistant to attempt to use the DAQmx API. Normally, I would say "Good for you". But if the code was working, why change it?
Mimic what I did with the Analog Output. See how I configured before the loop, wrote inside the loop, and closed after the loop? You should do the same thing with the Analog Input, except you do a DAQmx Read instead of a write.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

SSRS Expression to compare two values and get data from another dataset

Hi,
I have a requirement where in i need to compare a value of a dataset (not the one which table is poiting to)
with the value of a text box, and return the count if it matches else 0, the expression is as below. Here
industryName and recCount are from the dataset ds_MedimOrLowImpactEntities. whats wrong in this expression
=Sum(IIF(Fields!industryName.Value = reportItems!hpapra_name.Value, Fields!RecCount.Value, 0), "ds_MediumOrLowImpactEntities")
This is the error that i am getting:
Any help on this is appreciated
Kruthi Hegde

Hi Kruthi,
After testing the issue in my local environment, I can reproduce it. Just the error message said, “Aggregate function can be used only on report items contained in page headers and footers”. So the sum function that contains report items should be stayed
at page headers or footers. Besides, you said the hpapra_name textbox contain a field from another dataset, not the ds_MedimOrLowImpactEntities dataset. While in Reporting Services, Report item expressions can only refer to other report items within the same
grouping scope or a containing grouping scope. So consider the two issues, we should use some other expression to instead the “reportItems!hpapra_name.Value” expression.
Take a look at the "Looking up values from another dataset" topic here:
http://msdn.microsoft.com/en-us/library/ms159673.aspx#LookupFunctions
Hope this helps.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

Query with scalar valued function with date filter

Hello experts
i have a problem by filtering my results with the date
i have written the following code
SELECT
T1.ItemCode
, T1.Dscription
,DBO.F_CALCULATION_QUANTITY(T1.ITEMCODE)
FROM OINV T0
INNER JOIN INV1 T1 ON T0.DocEntry = T1.DocEntry
INNER JOIN OITM T2 ON T1.ItemCode = T2.ItemCode
INNER JOIN OSLP T3 ON T0.SLPCODE=T3.SLPCODE
WHERE
(T0.DOCDATE BETWEEN '2010-11-01' AND '2010-11-30')
and (t2.cardcode ='80022')
and (T0.CANCELED= 'N')
group by t1.itemcode, T1.Dscription, t2.suppcatnum
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER FUNCTION [dbo].[F_CALCULATION_QUANTITY]
(@ITEMCODE AS NVARCHAR(10))
RETURNS
NUMERIC(19,2)
AS
BEGIN
DECLARE
@RESULT1 AS NUMERIC(19,2),
@RESULT2 AS NUMERIC(19,2),
@RESULT AS NUMERIC(19,2)
SELECT @RESULT1=SUM(A.QUANTITY)
FROM INV1 A
JOIN OINV B ON A.DOCENTRY=B.DOCENTRY
WHERE A.ITEMCODE=@ITEMCODE
AND B.DOCDATE BETWEEN '2010-11-01 00:00:00.000' AND '2010-11-30 00:00:00.000'
SELECT @RESULT2=SUM(A.QUANTITY)
FROM RIN1 A
JOIN ORIN B ON A.DOCENTRY=B.DOCENTRY
WHERE A.ITEMCODE=@ITEMCODE
AND B.DOCDATE BETWEEN '2010-11-01 00:00:00.000' AND '2010-11-30 00:00:00.000'
SELECT @RESULT=ISNULL(@RESULT1,0)-ISNULL(@RESULT2,0)
--SELECT @RESULT=@RESULT1- @RESULT2
RETURN @RESULT
END
the problem i have is that i want to filter my results accoring to the date provided by the user. i want it to be dynamic query.
by now, what i do is to edit the docdate in the function in order to get the desired results. this is not what i want.
could you please help me on this way in order to let the user to input the date?if i add the [%] in the query, it does not bring me the right results

i have already edited the function to
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER FUNCTION [dbo].[F_CALCULATION_QUANTITY]
(@ITEMCODE AS NVARCHAR(10),
@STARTDATE1 as DATETIME,
@ENDDATE1 AS DATETIME
RETURNS
NUMERIC(19,2)
AS
BEGIN
DECLARE
@RESULT1 AS NUMERIC(19,2),
@RESULT2 AS NUMERIC(19,2),
@RESULT AS NUMERIC(19,2)
SELECT @RESULT1=SUM(A.QUANTITY)
FROM INV1 A
JOIN OINV B ON A.DOCENTRY=B.DOCENTRY
WHERE A.ITEMCODE=@ITEMCODE
AND B.DOCDATE BETWEEN (@STARTDATE1) AND (@ENDDATE1)
SELECT @RESULT2=SUM(A.QUANTITY)
FROM RIN1 A
JOIN ORIN B ON A.DOCENTRY=B.DOCENTRY
WHERE A.ITEMCODE=@ITEMCODE
AND B.DOCDATE BETWEEN (@STARTDATE1) AND (@ENDDATE1)
SELECT @RESULT=ISNULL(@RESULT1,0)-ISNULL(@RESULT2,0)
RETURN @RESULT
END
could you please how to edit the query as well?
i have added the following code and it comes up with the right itemcode but the quantity does not work
DECLARE
@ITEMCODE AS NVARCHAR(10),
@STARTDATE1 as DATETIME,
@ENDDATE1 AS DATETIME
SET @STARTDATE1=(SELECT MAX(T0.DOCDATE) FROM oinv t0 WHERE T0.DOCDATE='2010-11-01')
set @ENDDATE1=(SELECT MAX(T0.DOCDATE) FROM oinv t0 WHERE T0.DOCDATE='2010-11-30')
SELECT
T1.ItemCode
, T1.Dscription
,DBO.F_CALCULATION_QUANTITY(@ITEMCODE,@STARTDATE1,@ENDDATE1)
FROM OINV T0
INNER JOIN INV1 T1 ON T0.DocEntry = T1.DocEntry
INNER JOIN OITM T2 ON T1.ItemCode = T2.ItemCode
INNER JOIN OSLP T3 ON T0.SLPCODE=T3.SLPCODE
WHERE
(T0.DOCDATE BETWEEN @STARTDATE1 AND @ENDDATE1)
and (t2.cardcode ='80022')
and (T0.CANCELED= 'N')
group by t1.itemcode, T1.Dscription, t2.suppcatnum
the result is this
70200     alert1     0.00
70210     alert2     0.00
70220     alert3     0.00
70230     alert4     0.00
as you can see the quantity is 0 and it shouldnt be
Edited by: Fasolis Vasilios on Oct 31, 2011 10:49 AM

Value of the variable FISCYEAR to compare it with a fix date

Hi,
I'm using a hierarchy in my query. But in some case I have to multipliy the value in one column depending wich year is shown. So I tried to use a formular variable. But it doesn't work. Has somebody an idea what to do?
How can I extract the value of the variable FISCYEAR to compare it with a fix date?
Problem:
........................| Year 1 (2005)       | Year 2 (2006)        |   Year 3 (2007)
hierarchy row 1 | query result 11      | query result 12       | query result 13
hierarchy row 2 | query result 21      | query result 22       | query result 23
hierarchy row 3 | query result 31      | query result 32       | query result 33 => row is hidden
formular row 4   | IF Year == 2005    | IF Year == 2005     | IF Year == 2005
                         THEN                   | THEN                    | THEN
                        query result 31 *10 | query result 32 *10 | query result 33 *10
                        ELSE                     |ELSE                    | ELSE
                        query result 31       | query result 32       | query result 33

The If Statement is no problem.
I need the value of the variable FISCYEAR. So the value of the variable is the If-Statement. I tried to use a formula variable but don't get correct values. With BW 2004 I used the text and compared it with the string "2005". BW 2004s gives me the error message the if using the text, the value of the variable depends on the language which is not supported

Can I create "Dimension value range" dynamically from data?

Hi,
Can I create "Dimension value range" dynamically from data?
Regards

You need to have a Database Link between two servers. Then you could do execute that statement without any problem. Try to create a database link with the help of
CREATE DATABASE LINK command. Refer Document for further details

What's wrong with dynamic data?

I am starting this thread to showcase what I might call "dynamic data abuse": The use of dynamic data where it has no business to be used (does it ever?).
Everybody is invited to contribute with their own examples!
One of the problems when operating on dynamic data is its opacity. We can never really tell what's going on by looking at the code. It also seems to hide serious programming mistakes by adapting in ways to mask horrendous code and making it seemingly functional, glossing over the glaring programming errors.
To get it all started, here are a few recent sightings:
(A)
(Seen here). No Kidding! The users joins a scalar with a waveform, then wires the resulting dynamic data to the index input of "replace array subset". He cannot see anything wrong, because the program actually works (coercing the dynamic data to a scalar will, by a happy coincidence, return the value of the scalar joined earlier. I have no idea what thought process led to this code in the first place (maybe just randomly connecting functions until the result is as expected? ).
(B)
(seen here)
What's wrong with simply branching the wire???
(C)
I don't remember the link, but here's how somebody transposed a 2D array a while ago (bottom part of image). No way to tell from looking at the code picture! (The "FromDDT" and "ToDDT" need to be configured just right ...).
ARRRRGH!
LabVIEW Champion . Do more with less code and in less time .
Attachments:
join.png ‏2 KB
split.png ‏3 KB
DynamicTranspose.png ‏18 KB

Here's another one for you. Found here:http://forums.ni.com/t5/LabVIEW/Program-unresponsive-after-a-dialog-box-input/m-p/2447608#U2447608
Put a bunch of booleans into a Combine Signals and then do a Dynamic Data to Boolean Array.
I supplied the much more cleaned up version of the code below.
EDIT: I just realized I needed to subtract 1 frm the power before using the Scale by Power of 2. Oops.
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Attachments:
Button Press Decoder_BD.png ‏41 KB

Waveform vs. Dynamic data

Can anyone tell me what is the main difference between the Waveform data type and the Dynamic data type?
I am streaming multi-channel data to file using the datalog format and I want to know if there is a difference if I store it as Dynamic data or if I should convert it to waveform first. Also if I should do the reverse when reading it back. Thanks.

The more I look into DDT, the more it seems like a hassle, especially if you want to perform any operations on the data. For example, after doing a search in NI Support, nearly all responses recommend converting from DDT to an array/waveform/scalar/etc. before you can effectively manipulate the data. Here's a sample of some responses:
DDT Response 1
DDT Response 2
DDT Response 3
The picture I'm forming is that DDT may be useful for simple Express VIs--and this may serve the purposes of a lot of the LabVIEW population in the easiest fashion. But performing any operations on DDT data appears to always require conversion to waveform/array/scalar/etc. This will add a bit of overhead to your code. You may find that you will answer your question(s) only after doing some coding with DDT and comparing it to the code required to do the same task but using waveform data types instead. Having looked into it a bit, I think I'll avoid DDTs.

How to display dynamic datas and double datas (chart)

Hi all !
I would like to display dynamic datas and double datas by using charts.
However, it doesn't work and I don't understand why.
Can you help me to fix that ?
Best regards,
- John
Attachments:
double_dynamics_data.vi ‏54 KB

Hi John,
the sine looks like it should look with your VI!
You convert the DDT to a scalar DBL. That conversion will only use the first sample of the generated sine waveform - usually this is always the same (offset) value when you generate full periods… Or to put it in a mathematical expression: sin(0°)+4 = 4!
When you want to display waveform you should work with waveforms!
Actually, I have used Dynamic data type in order to simulate an signal.
Well, I also simulated a signal in my example VI. I didn't use any ExpressVI to do so…
In a few weeks, I will receive a sensor. I will use in LabView 'DAQ Assistant' whose the ouput is a Dynamic Data.
Nobody forces you to use the DAQAssistent ExpressVI. There are nice DAQmx functions available and LabVIEW comes with a lot of ready-to-use example VIs…
That's why, I used in first place, the 'Simulate signal'. So I think I should keep Dynamic Data Type
I do think you don't need to use the DDT. I think it's better to understand what is going on in your VI. And I think the DDT will be no help for you…
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Search 1 d array of dynamic data

Hi,
Is there a reason why the 'Search 1 D Array' function doesn't give the expected results when working on Dynamic data?
I am trying to use one where it's input array comes from a Comparison VI inside a For loop, and so is an array of 0's & 1's.
The element that I have set it to look for is 0, a Numeric Constant converted to Dynamic Data Type using the Convert to Dynamic Data function.
It appears to me that regardless of whether the array contains a 0, the output is always -1, which indicates that a 0 was not present.
Any assistance much appreciated
Thanks
Lama

Stradis,
Thanks for your reply.
I am also using LabVIEW 8.2.1
The reason that I am using Dynamic Data types is because this is what the Comparison VI require as input, and produce as output.
I am using one Comparison VI to compare some DMM readings against a spreadsheet of expected values, with it set to equal within tolerance and outputting one result per datapoint. This will put a 0 against any DMM reading that falls outside of range.
I am using a second Comparison VI in a similar way, but set to output one result for all channels to produce an overall pass or fail result (1 or 0) for each sweep of the DMM.
The DMM is set to measure resistance, 2 wire mode and the two wires are routed through two switching matrixes. I am connecting one of the DMM inputs to the first wire and measuring between it and the remainig wires in turn, via the second switching matrix. This is what I am calling one sweep. I am then moving the first DMM input to the second wire and repeating the sweep, etc.
Consequently I get a 1 D Array of dynamic data out of my For loop, and I want to search it to see if it contains any 0's, which would indicate an overall fail. I had hoped to use the 'Search 1 D Array' function to do this, and if it returned a -1, to use this as an indication that the equipment under test passed all sweeps of the DMM, but as I said earlier I also get -1 for what should be fail conditions.
I hope you will forgive the spralling mess that is my code, I know that I need to reduce it to a number of sub VI's etc, but I just wanted to see it work first. Hopefully it is attached,
Thanks
Lama
Attachments:
DMM & 2 Switch Synchronous Scanning 18.vi ‏646 KB

How Can I get multi column values from dynamic search help?

Hi Gurus;
I'm using dynamic search help in my program.
I want to get multi column values from search help. But I dont know solution for this issue.
I'm using F4IF_INT_TABLE_VALUE_REQUEST FM.
How Can I get multi column values from dynamic search help?
Thanks.

Believe it or not, the same FM worked for me in a dynpro. I will try to explain here how it works in custom screen and then you can do your work for other screens or program types. I am not going to write my actual work but will explain in general.
I have 4 fields (FLD1, FLD2, FLD3, FLD4) and i made the search based on FLD2 and when user click on a line (could be any field), then this would bring the line on to the screens.
There are like 3 steps.
You have your value_tab for my fields FLD1, FLD2, FLD3 and FLD4. This is just the data that we pass into the FM. (data: IT_VALTAB type table of ZVAL_TABLE)
Next map the screen fields into an internal table (data: It_dynpfld type table of dselc ). I also have other internal tables defined (just to keep it straight, i will be putting here) data: It_return type standard table of ddshretval.
Next step is to call the function module. Make sure you have values in IT_VALTAB.
call function 'F4IF_INT_TABLE_VALUE_REQUEST'
exporting
        retfield        = 'FLD2'
        value_org       = 'S'
      tables
        value_tab       = It_VALTAB
        return_tab      = It_return
        dynpfld_mapping = It_dynpfld
      exceptions
        parameter_error = 1
        no_values_found = 2
        others          = 3.
    if sy-subrc <> 0.
      message id sy-msgid type sy-msgty number sy-msgno
      with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
    else.
      perform get_selected_fields tables It_return.
    endif.
The code within the perform GET_SELECTED_FIELDS - We need to map the result fields after user selects it. The code goes like this. This is step is to update the dynpro fields.
I need a internal table as well as a work area here. like,
data: lt_fields type table of dynpread,
        la_fields type dynpread.
field-symbols: <fs_return> type ddshretval.
so fill out LT_FIELDS from the IT_RETURN table
loop at lt_return assigning <fs_return>.
    la_fields-fieldname = <fs_return>-retfield.
    la_fields-fieldvalue = <fs_return>-fieldval.
    append la_fields to lt_fields.
    clear: la_fields.
endloop.
Call the FM to update the dynpro
call function 'DYNP_VALUES_UPDATE'
    exporting
      dyname               = sy-repid
      dynumb               = '1002' "This is my screen number. You could use 1000 for selection screen (hope so)
    tables
      dynpfields           = lt_fields
    exceptions
      invalid_abapworkarea = 1
      invalid_dynprofield = 2
      invalid_dynproname   = 3
      invalid_dynpronummer = 4
      invalid_request      = 5
      no_fielddescription = 6
      undefind_error       = 7
      others               = 8.
if sy-subrc <> 0.
    message id sy-msgid type sy-msgty number sy-msgno
            with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
endif.
good luck

Using htp.p for print dynamic data in apex region make my page slow?

Hi, everyone!!! My name is Rafael, and...
I search in the web and in this forum but i can´t find a answer for my doubt.
Using the procedure htp.p for print dynamic data in apex region through on demand process , this will leave my webpage slow to load when the user access?
Example:
For build a menu in my webpage, it´s read a function in the database that returns variable string, so by a demand process this string is obtain and print in a web page using htp.p.
I notice that this practice causes slow to load the data on the page.
This is it...
If someone help me, thanks...
bye and Happy new Year!!!
Edited by: user9518141 on 26/12/2009 17:19

Hi,
Try commenting out the function call and print some sample text in the htp.p like htp.p('Hello world..');
I think the function call is probably taking a lot of time .. not htp.p.
I have used htp.p to print out values dynamically in a lot of situations and have not ever come across any performance issues.It could be a problem with the function you are calling.
Thanks,
Rajesh.

Dynamic Data Connection Parameter and Report Parameters

Post Author: despec
CA Forum: General
Hello to all,I am using a business view that is based on a dynamic data connection of 13 databases, each a different school. When I use the BV is a CXrystal Report (XI), it correctly, of course, uses the "read only" parameter for me to select a school. My problem arises when I try to enter a student name "list of values" parameter using that same dynamic data connection. After I select the "read only" school parameter, I then select that student name and immediately, the "read only" school parameter resets to "--". Therefore when I click okay, I get an error saying that my selection for the first parameter is invalid.Anyone have any suggestion on how I may be able to resolve this?Thanks,David

Hello,
Jsut a reminder this is not a Support Case Management system but for all to use.
Since you have BOE 3.1 you should have a valid support contract. Log into Service Market Place and create a case on line and a support Engineer will call you.
If you don't know how to then ask your Manager who is your SAP Account Super User and that person can add you to the list and give you a log in ID and password.
Thank you
Don

XML Publisher - Dynamic Data Columns Issue

Hi,
I am creating a amortization report where I need to show the amortization schedule for unearned revenue. Customers have signed different years of contract and I need to show the amount as per their remaining contract months. So if there are 2 month remaining in the contract then I should show the data for 2 months only and if there are 10 months then I should display 10 months. If we run the report for both customers then it should display two lines in report. For first customer the data should be only for 2 months and for second row(customer) there should be data for next 10 months. These months should be columns in the report(like excel columns, not rows). I need to display all months in columns instead of rows.
I have acheived that using Dynamic Data Columns as mentioned in the user guide. Everything is working fine except following issues -
1. How to create page level total?_
I have created page total in my template using <?add-page-total:TOTUREV;'UREV'?> and displaying using <?show-page-total:TOTUREV?> but when I run the report in excel format these page total do not display. These columns are static columns not dynamic.
If I run the report in pdf format then the static column total is displayed correctly.
2. When I run the report in excel format then report run fine and it shows all the columns properly but if I run the report in pdf format then the dynamic column are not displayed in their own columns, all the columns are overwriting each other in a single columns itself, its not expanding.
3. How do I get the total for the dynamic columns?_
I need to display the page level total for the dynamic columns also, how do I do that?
4. When I run the report in excel format the 2 decimal places of the numbers are gone(it works fine in pdf output), like 12.50 becomes 12.5 and 14.00 becomes 14. I need to maintain those 2 decimal places. I have tried using <fo:bidi-override direction="ltr" unicode-bidi="bidi-override"><?format-number:CVALUE;'999999D99'?></fo:bidi-override> but this does not solve my problem completely. It shows the values correctly in excel but then I am not able to do any calculation on those columns, looks like it converts them to text values.
Any help is really appreicated. Please let me know if you need the xml template and data file.
Regards
Hitesh

Hi Hitesh,
Can you please upload your RTF and XML template file? I will try to spend sometime on this issue.
Cheers
Sachin

Create a new column in a table that compares the value of one column with its previous value

The DDL:
DECLARE
@T TABLE
IDNO
int,
name
varchar(40),
[Date]
datetime2,
Price1
float,
Price2
float
DECLARE
@K TABLE
IDNO
int,
name
varchar(40),
[Date]
datetime2,
Price1
float,
Price2
float
INSERT
INTO @T
VALUES(22,'C_V_Harris','2014-01-02 10:23:49.0000000',
23.335,
23.347)
INSERT
INTO @T
VALUES(21,'C_V_Harris','2014-01-02 10:05:13.0000000',
23.357,
23.369)
INSERT
INTO @T
VALUES(20,'C_V_Harris','2014-01-02 09:56:15.0000000',
23.364,
23.377)
INSERT
INTO @T
VALUES(19,'C_V_Harris','2014-01-02 09:45:26.0000000',
23.351,
23.367)
INSERT
INTO @T
VALUES(18,'C_V_Harris','2014-01-02 09:43:20.0000000',
23.380,
23.396)
INSERT
INTO @T
VALUES(17,'C_V_Harris','2014-01-02 09:34:28.0000000',
23.455,
23.468)
INSERT
INTO @T
VALUES(16,'C_V_Harris','2014-01-02 09:30:37.0000000',
23.474,
23.486)
INSERT
INTO @T
VALUES(15,'C_V_Harris','2014-01-02 09:18:12.0000000',
23.419,
23.431)
INSERT
INTO @T
VALUES(14,'C_V_Harris','2014-01-02 09:16:06.0000000',
23.360,
23.374)
INSERT
INTO @K
SELECT
ROW_NUMBER()
OVER (ORDER
by IDNO)
AS RN,*
FROM
@T
SELECT
* FROM
@K
--not working:
SELECT
a.RN,a.Price2
FROM
@K a
INNER
JOIN @K
b
ON
a.RN=b.RN-1
WHERE
a.Price2>b.Price2
I need to create a view with a column (say 'Comp' below) that compares the value of each row in Price2 with the previous Price2 row, and it is greater then +1, the
same 0, and less -1.
The processed table should be:
IDNO
name
Date
Price1
Price2
Comp
22
C_V_Harris
1/2/2014 10:23:49
23.335
23.347
0
21
C_V_Harris
1/2/2014 10:05:13
23.357
23.369
1
20
C_V_Harris
1/2/2014 9:56:15
23.364
23.377
1
19
C_V_Harris
1/2/2014 9:45:26
23.351
23.367
-1
18
C_V_Harris
1/2/2014 9:43:20
23.38
23.396
1
17
C_V_Harris
1/2/2014 9:34:28
23.455
23.468
1
16
C_V_Harris
1/2/2014 9:30:37
23.474
23.486
1
15
C_V_Harris
1/2/2014 9:18:12
23.419
23.431
-1
14
C_V_Harris
1/2/2014 9:16:06
23.36
23.374
-1
How can I structure the statement to get (the most recent - order by date ) result for Comp?

Satheesh Variath, I just had to make some corrections from your script to get the correct answer:
CREATE
VIEW vw_Comp
AS
SELECT
TOP 1 t.IDNO,t.name,t.[Date],t.Price1,t.Price2,
CASE
WHEN t.Price2
> LAG(Price2,1)
OVER (PARTITION
BY name
ORDER BY IDNO)
THEN 1
WHEN t.Price2
< LAG(Price2,1)
OVER (PARTITION
BY name
ORDER BY IDNo)
THEN -1
ELSE 0
END
AS Comp
FROM
@T t
ORDER
BY DATE
DESC
The adjustments: the selection of the most recent comparison (Top 1) and the use of the function LAG (instead of LEAD) to get the previous value of the column.

Compare scalar value to dynamic data

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