Selecting The First Row Of h:dataTable after getting new DataModel f

Hi Friends
If any one knows how to select first row of a dataTable on change of a DataModel it is representing please give the reply

I haven't understood the answer of UlrichCech
I am not using IRDA for my development purpose.
and abt your reply ..
I have already tried tht way but the problem is that
whenever I selects different row page gets postback and selects
the first row again and there is no way to trap posback event in JSF
like ASP.NET
I think my answer is some where related to DataModelListener..

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Message was edited by:
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here you go
SQL> drop table t;
Table dropped.
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1 row created.
SQL> insert into t values('A', 1, 'W', 'blah3');
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1 row created.
SQL> insert into t values('A', 2, 'G', 'blah5');
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SQL> insert into t values('A', 2, 'H', 'blah6');
1 row created.
SQL> insert into t values('B', 1, 'K', 'blah7');
1 row created.
SQL> insert into t values('B', 1, 'L', 'blah8');
1 row created.
SQL> insert into t values('B', 2, 'E', 'blah9');
1 row created.
SQL> insert into t values('B', 2, 'F', 'blah0');
1 row created.
SQL> select b,d,t
2    from (
3 select row_number() over(partition by b, d order by b,d) rno,b,d,t
4    from t)
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Thank you very much.

Thank you for your reply!
But the example you mentioned also has the issue like one of the comments :
"Hi, on selecting the first row it displays the correct value, when navigating to another row still it displays the old value and not fetching the new selected row, actually I can see this on your sample screen shots... is there any way we can fix??"
Is there any resolution?

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How do I create a 1d array that takes a single calculation and insert the result into the first row and then the next calculation the next time the loop passes that point and puts the results in thsecond row and so on until the loop is exited.

The attached file is work inprogress, with some dummy data sp that I can test it out without having to connect to equipment.
The second tab is the one that I am having the problem with. the output array from the replace element appears to be starting at the index position of 1 rather than 0 but that is ok it is still show that the new data is placed in incrementing element locations. However the main array that I am trying to build that is suppose to take each new calculation and place it in the next index(row) does not ap
pear to be working or at least I am not getting any indication on the inidcator.
Basically what I am attempting to do is is gather some pulses from adevice for a minute, place the results for a calculation, so that it displays then do the same again the next minute, but put these result in the next row and so on until the specifiied time has expired and the loop exits. I need to have all results displayed and keep building the array(display until, the end of the test)Eventually I will have to include a min max section that displays the min and max values calculated, but that should be easy with the min max function.Actually I thought this should have been easy but, I gues I can not see the forest through the trees. Can any one help to slear this up for me.
Attachments:
regulation_tester_7_loops.vi ‏244 KB

I didn't really have time to dig in and understand your program in depth,
but I have a few tips for you that might things a bit easier:
- You use local variables excessively which really complicates things. Try
not to use them and it will make your life easier.
- If you flowchart the design (very similar to a dataflow diagram, keep in
mind!) you want to gather data, calculate a value from that data, store the
calculation in an array, and loop while the time is in a certain range. So
theres really not much need for a sequence as long as you get rid of the
local variables (sequences also complicate things)
- You loop again if timepassed+1 is still less than some constant. Rather
than messing with locals it seems so much easier to use a shiftregister (if
absolutely necessary) or in this case base it upon the number of iterations
of the loop. In this case it looks like "time passed" is the same thing as
the number of loop iterations, but I didn't check closely. There's an i
terminal in your whileloop to read for the number of iterations.
- After having simplified your design by eliminating unnecessary sequence
and local variables, you should be able to draw out the labview diagram.
Don't try to use the "insert into array" vis since theres no need. Each
iteration of your loop calculates a number which goes into the next position
of the array right? Pass your result outside the loop, and enable indexing
on the terminal so Labview automatically generates the array for you. If
your calculation is a function of previous data, then use a shift register
to keep previous values around.
I wish you luck. Post again if you have any questions. Without a more
detailed understanding of your task at hand it's kind of hard to post actual
code suggestions for you.
-joey
"nelsons" wrote in message
news:[email protected]...
> how do I create a 1d array that takes a single calculation and insert
> the result into the first row and then the next calculation the next
> time the loop passes that point and puts the results in thsecond row
> and so on until the loop is exited.
>
> The attached file is work inprogress, with some dummy data sp that I
> can test it out without having to connect to equipment.
> The second tab is the one that I am having the problem with. the
> output array from the replace element appears to be starting at the
> index position of 1 rather than 0 but that is ok it is still show that
> the new data is placed in incrementing element locations. However the
> main array that I am trying to build that is suppose to take each new
> calculation and place it in the next index(row) does not appear to be
> working or at least I am not getting any indication on the inidcator.
>
> Basically what I am attempting to do is is gather some pulses from
> adevice for a minute, place the results for a calculation, so that it
> displays then do the same again the next minute, but put these result
> in the next row and so on until the specifiied time has expired and
> the loop exits. I need to have all results displayed and keep building
> the array(display until, the end of the test)Eventually I will have to
> include a min max section that displays the min and max values
> calculated, but that should be easy with the min max function.Actually
> I thought this should have been easy but, I gues I can not see the
> forest through the trees. Can any one help to slear this up for me.

Get only the first row for duplicate data

Hello,
I have the following situation...
I have a table called employees with column (re, name, function) where "re" is the primary key.
I have to import data inside this table using an xml file, the problem is that some employees can be repeated inside this xml, that means, I'll have repeated "re"'s, and this columns is primary key of my table.
To workaround, I've created a table called employees_tmp that has the same structed as employees, but without the constraint of primary key, on this way I can import the xml data inside the table employees_tmp.
What I need now is copy the data from employees_tmp to employess, but for the cases where "re" is repeated, I just want to copy the first row found.
Just an example:
EMPLOYEES_TMP
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0978 RANIERI ANALYST
0875 RICHARD VICE-PRESIDENT
I want to copy the data to make employees looks like
EMPLOYEES
RE NAME FUNCTION
0987 GABRIEL ANALYST
0978 RANIERI ANALYST
0875 RICHARD VICE-PRESIDENT
How could I do this?
I really appreciate any help.
Thanks

Try,
SELECT re, NAME, FUNCTION
FROM (SELECT re,
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               FUNCTION,
               ROW_NUMBER () OVER (PARTITION BY re ORDER BY NAME) rn
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WHERE rn = 1G.

Selecting The First Row Of h:dataTable after getting new DataModel f

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