LOOP out
HelloI'm a little confused in the operation of output...
I have a loop & inside I have a Begin-End block that I wrote the output...
<... Example of... >
LOOP
BEGIN
/ * Some statements * /.
/ * Some statements * /.
/ * Some statements * /.
EXCEPTION
- And here written m only out
EXIT;
AT THE END:
END LOOP;
---------------------------------------------------------------------------
So here's what happens... will he simply leave the Begin-End block... Or he'll break out of the LOOP... I wrote it OUT in section exceptions.
It will come out side of the loop and you can check that easily with a small test case.
SQL> DECLARE
v_name emp.ename%TYPE;
BEGIN
LOOP
BEGIN
SELECT ename INTO v_name FROM emp WHERE empno=7369;
dbms_output.put_line('EmpName:'||v_name);
--I know there is no employee with 7399, So it will generate exception
SELECT ename
INTO v_name
FROM emp
WHERE empno=7399;
dbms_output.put_line('EmpName:||v_name');
EXCEPTION
WHEN no_data_found THEN
dbms_output.put_line('Inside exception');
EXIT;
END;
dbms_output.put_line('Will it just exit from begin-end block?');
END LOOP;
dbms_output.put_line('Outside Loop');
END; 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
23 /
EmpName:SMITH
Inside exception
Outside Loop
PL/SQL procedure successfully completed.
SQL>
Tags: Database
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http://www.NI.com/example/28769/en/
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You are a little out of your reasoning. I'll explain what continues.
The outer loop runs in the lower loop and the inner loop runs once per iteration of the outer loop until the value of SW - LV is True. Then the inner loop starts reading the value of SW - LV each iteration until what you press the SW - LV thw to witch point passes the value of SW - LV (believe me, tearing up the Local write on and it works the same)
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Hello!
Please note that the order of execution of the write operations on the shared variable 000002 is not determined.
For example, nothing prevents this order of execution:
(1) value false 000002
(2) set to true 000002
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Kind regards
Marco
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DimstrBowlingScores AsString
DimintBowlingScores AsInteger
DimintScoreTally AsInteger
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DimstrNegativeMessage = ' error - please enter a positive number for player #
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DimintPlayerNumber = 1
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DoUntilintPlayerNumber< intmaxnumberofentries="" orstrcanceled="">
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On the other
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EndIf
Loop
Your question is beyond the scope of this community.
I suggest you post to MSDN and/or Stackoverflow
It may be useful
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Hello
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We never saw it? Is there a solution?
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Allow the hash join:
SELECT count (*)
Message FROM
LEFT JOIN (SELECT hi.message_id, hi.update_dt
ROWNUM
OF message_hist salvation) PM ON (i.message_id = h.message_id
AND i.update_dt = h.update_dt)
LEFT JOIN (SELECT hi.message_id, hi.update_dt
ROWNUM
OF message_hist salvation) h2 ON (i.message_id = h2.message_id
AND h2.update_dt<>
AND h2.update_dt <> i.update_dt)
/
----------------------------------------------------------------------------------------
| ID | Operation | Name | Lines | Bytes | Cost (% CPU). Time |
----------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1. 66. 211 (1) | 00:00:01 |
| 1. GLOBAL TRI | | 1. 66. | |
|* 2 | EXTERNAL RIGHT HASH JOIN | | 800 | 52800 | 211 (1) | 00:00:01 |
|* 3 | VIEW | | 1. 22. 70 (0) | 00:00:01 |
| 4. COUNTY | | | | | |
| 5. TABLE ACCESS FULL | MESSAGE_HIST | 1. 22. 70 (0) | 00:00:01 |
|* 6 | EXTERNAL RIGHT HASH JOIN | | 800 | 35200. 141 (1) | 00:00:01 |
| 7. VIEW | | 1. 22. 70 (0) | 00:00:01 |
| 8. COUNTY | | | | | |
| 9. TABLE ACCESS FULL | MESSAGE_HIST | 1. 22. 70 (0) | 00:00:01 |
| 10. TABLE ACCESS FULL | MESSAGE | 800 | 17600 | 70 (0) | 00:00:01 |
----------------------------------------------------------------------------------------
Information of predicates (identified by the operation identity card):
---------------------------------------------------
2 - access("I".") MESSAGE_ID '= 'H2'.' MESSAGE_ID "(+))"
filter ("H2". "UPDATE_DT" (+)<>'I'. " ("' UPDATE_DT")
3 - filter("H2".") UPDATE_DT "(+)<>
6 - access("I".") "UPDATE_DT" ="H" UPDATE_DT "(+) AND"
"I"." ' MESSAGE_ID ' ="H" MESSAGE_ID "(+))"
Materialize the subquery:
WITH h AS (SELECT / * + MATERIALIZE * / hi.message_id, hi.update_dt)
ROWNUM
OF message_hist salvation)
SELECT count (*)
Message FROM
LEFT JOIN: ON (i.message_id = h.message_id
AND (i.update_dt = h.update_dt OR h.update_dt<>
----------------------------------------------------------------------------------------------------------
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----------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1. 22. 1740 (0) | 00:00:01 |
| 1. TRANSFORMATION OF THE TEMPORARY TABLE. | | | | |
| 2. LOAD SELECT ACE | SYS_TEMP_0FD9D6810_5B8F6E67 | | | | |
| 3. COUNT | | | | | |
| 4. TABLE ACCESS FULL | MESSAGE_HIST | 1. 22. 70 (0) | 00:00:01 |
| 5. GLOBAL TRI | | 1. 22. | |
| 6. NESTED EXTERNAL LOOPS | | 800 | 17600 | 1670 (0) | 00:00:01 |
| 7. TABLE ACCESS FULL | MESSAGE | 800 | 17600 | 70 (0) | 00:00:01 |
| 8. VIEW | | 1. | 2 (0) | 00:00:01 |
|* 9 | VIEW | | 1. 22. 2 (0) | 00:00:01 |
| 10. TABLE ACCESS FULL | SYS_TEMP_0FD9D6810_5B8F6E67 | 1. 22. 2 (0) | 00:00:01 |
----------------------------------------------------------------------------------------------------------
Information of predicates (identified by the operation identity card):
---------------------------------------------------
9 - filter("I".") ' MESSAGE_ID ' ="H" MESSAGE_ID' AND ('I'. "" "UPDATE_DT"="H" UPDATE_DT' OR
"H"." UPDATE_DT ".<>
You may need to change the first condition to make sure that you select the correct subquery.
-edit
Not able to view a plan but you can invade the second join condition select and then the result of a subquery with a predicate according to your requirement. This should delay the or rating and leave only an equijoin (although rowsource return may be slightly larger than the opposite).
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A hybrid of the previous two plans with a slight modification of how he was imitating the GOLD:
WITH h AS (SELECT / * + MATERIALIZE * / hi.message_id, hi.update_dt)
ROWNUM Clotilde
OF message_hist salvation)
SELECT i.MESSAGE_ID
i.UPDATE_DT
COALESCE(h.message_id,h2.message_id) message_id
, COALESCE (h.update_dt, h2.update_dt) update_dt
Clotilde COALESCE (h.rown, h2.rown)
Message FROM
LEFT JOIN: ON (i.message_id = h.message_id
AND i.update_dt = h.update_dt)
LEFT JOIN: h2 WE (DECODE(h.message_id,,i.message_id) = h2.message_id - only try this if previous join returned NULL
AND h2.update_dt<>
/
--------------------------------------------------------------------------------------------------------
| ID | Operation | Name | Lines | Bytes | Cost (% CPU). Time |
--------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1. 66. 8 (0) | 00:00:01 |
| 1. TRANSFORMATION OF THE TEMPORARY TABLE. | | | | |
| 2. LOAD SELECT ACE | SYS_TEMP_0FD9D6605_28F27F | | | | |
| 3. COUNT | | | | | |
| 4. TABLE ACCESS FULL | MESSAGE_HIST | 150. 3300 | 2 (0) | 00:00:01 |
| 5. GLOBAL TRI | | 1. 66. | |
|* 6 | EXTERNAL RIGHT HASH JOIN | | 10497. 676K | 6 (0). 00:00:01 |
|* 7 | VIEW | | 150. 3300 | 2 (0) | 00:00:01 |
| 8. TABLE ACCESS FULL | SYS_TEMP_0FD9D6605_28F27F | 150. 3300 | 2 (0) | 00:00:01 |
|* 9 | OUTER HASH JOIN | | 328. 14432 | 4 (0) | 00:00:01 |
| 10. TABLE ACCESS FULL | MESSAGE | 200 | 4400 | 2 (0) | 00:00:01 |
| 11. VIEW | | 150. 3300 | 2 (0) | 00:00:01 |
| 12. TABLE ACCESS FULL | SYS_TEMP_0FD9D6605_28F27F | 150. 3300 | 2 (0) | 00:00:01 |
--------------------------------------------------------------------------------------------------------Information of predicates (identified by the operation identity card):
---------------------------------------------------6 - access("H2".") MESSAGE_ID "(+) = DECODE (TO_CHAR ('H'". "))" MESSAGE_ID"), NULL, 'I '. (("' MESSAGE_ID '))
7 - filter("H2".") UPDATE_DT "(+)<>
9 - access("I".") "UPDATE_DT" ="H" UPDATE_DT "(+) AND 'I'." "" ' MESSAGE_ID '="H" MESSAGE_ID "(+))"(This plan is another system if costs are not comparable)
-
I have a nested loop
loop1 start
...
loop2 start
...
end loop2
...
end loop1
I want to know how can I come out the two loops of the inner loop.Hello
Out of the inner loop in the use of nested loops labelsSQL> BEGIN 2 <> 3 FOR i IN 1..2 LOOP 4 < > 5 FOR j IN 1..4 LOOP 6 DBMS_OUTPUT.PUT_LINE('I am in Inner Loop'); 7 END LOOP inner; 8 DBMS_OUTPUT.PUT_LINE('I am in outer Loop'); 9 END LOOP outer; 10 END; 11 / I am in Inner Loop I am in Inner Loop I am in Inner Loop I am in Inner Loop I am in outer Loop I am in Inner Loop I am in Inner Loop I am in Inner Loop I am in Inner Loop I am in outer Loop PL/SQL procedure successfully completed. SQL> BEGIN 2 < > 3 FOR i IN 1..2 LOOP 4 < > 5 FOR j IN 1..4 LOOP 6 DBMS_OUTPUT.PUT_LINE('I am in Inner Loop'); 7 exit inner; 8 END LOOP inner; 9 DBMS_OUTPUT.PUT_LINE('I am in outer Loop'); 10 END LOOP outer; 11 END; 12 / I am in Inner Loop I am in outer Loop I am in Inner Loop I am in outer Loop PL/SQL procedure successfully completed. SQL> SQL> BEGIN 2 < > 3 FOR i IN 1..2 LOOP 4 < > 5 FOR j IN 1..4 LOOP 6 DBMS_OUTPUT.PUT_LINE('I am in Inner Loop'); 7 exit outer; 8 END LOOP inner; 9 DBMS_OUTPUT.PUT_LINE('I am in outer Loop'); 10 END LOOP outer; 11 END; 12 / I am in Inner Loop PL/SQL procedure successfully completed. Twinkle
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FPGA CRio do not give good digital outputs
I'm working on a project with the compact RIO fpga. I tried following the youtube tutorials and written tutorial, but I get no similar results in scanning FPGA interface.
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Any help is appreciated.
Thank you.
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I was able to successfully save my table of cluster data to a file of PDM using the following block diagram:
I tried to rebuild my data using the following block diagram:
When the program comes to the nested FOR loop, it will never come. I put a probe on the data to enter into this loop and there is certainly a great picture goes in. Does anyone have ideas for me? Also, should I try a different method to save and restore data? (It seems that TDMS is not very friendly, unless give you him waveform data)
Thanks for any help!
Hi Nick,
The number of iterations of the loop is determined by the smaller table - in this case I would hazard a guess that your definition of cluster matrix (DataArrays.PeakDataArray) is empty - the auto-index entry will see zero element and pass the loop.
You'll want to index this table of a loop to provide the definition of cluster.
* edit *: by "a loop out", I mean that you need to use a table of index function, preferably outside the loop for external - you want auto-index just to get the definition of cluster.
Kind regards
-
1 table D of waveform DBL file or its
Hello.
I am building an application where I have an accelerometer with an interface USB-1208FS samples.
I have this loop on the inside with a few virtual instruments to display the waveform and frequency of it components. I tried many different approaches to record in a file, but it doesn't seem to work. No file is created even although I am administrator.
Data that are fed to the filters and these great are "table 1 d of waveform (DBL). Tried to convert other types of data, but does not work. This VI for example 'write waveform of File.VI' does nothing even if it should accept this type of data. It's "waveform table is a 1 d table the you want to write to a file of wave forms.»
I'd appreciate any help on my way to accomplish this task. With regard to Abraham
You still have not posted this VI. You say exactly what function and it is inside the loop / out of the loop that wants to say? My only guess is that you use the button stop in the toolbar.
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Hello world
I'm doing two separate meters on a structure of true and false case. I want to count every time the true and
false cases occurs and then make sense to charges outside of the structure.
I did some research and saw that you can put a loop records shift on the edges of some time and put the structure cases inside.
But it doesn't seem to work when I want the two different numbers each time time to loop out runs.
Anyone know what I can do or what is the problem? Should I just a pair of shift registers or two?
I am using LabView 2010.
Best regards
Ranjeet_Singh solution will work, but I recommend using shift registers according to your original thought.
Here is a slightly modified version:
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Hi, I was a little perplexed by this question from my friend!
He has this loop for to create a random number of precison double in a table!
now, he asked me what is the best when he's trying to convert the number into number of single precision inside the loop & out of the loop!
are they not both the same?
Jay
Hi BooJay,
conversion of the loop: the tunnel exit already create a SGL array.
conversion to the outside: the tunnel creates a DBL array, which is converted as a block to SGL - so in need of another block of memory.
As long as the memory allows, you can use both methods. The conversion in the loop use less memory, but may run a little slower...
-
Cards hand VI are not updated until end of sub VI
I have 1 main VI calling several Sub screws in sequential order. The problem which I am facing is that real-time data created by one under that VI is not displayed in the hand VI UNTIL the sub VI ends.
The sub VI: in a While loop, an engine step by step is executed until a final position or charge threshold has been reached. The motor drive NI MID-7604 and NI 7340 motion controller are used for the two movements of the acquisition of stepper and the load cell data. The current position of the stepper motor and the load cell value returned permanently until the loop ends. I connected the variables corresponding to the position and load from within the While loop, as well as created global variables that are both inside and out of the While loop. Once the program is completed, a Boolean value is set to true, which is used by the main move program.
Main VI: the main program consistes of sequential images. Within the framework established by the Subvi above, VI sub is called with 4 inputs and 3 outputs (true/false condition finished and load and position settings). Also some time ago loop containing the two graphs corresponding to the position and load, as well as global variables (related to the graphs as well). It's just an attempt to see what works, of course, I want only 1 set of graphs. The condition for the while loop is true/false condition issued by the sub VI, and I know that the condition is set to false before the frame of the sequence.
In the Main VI that I tried put the global variables in a While loop, out of a While loop, both the Globals and the void VI in a While loop and placing the globals outside of the sequence. It goes same for no global variables that are related to the sub VI connectors. It appears as well as part of the sequence, the while loop containing the desired graphics is not started until the end of the Sub VI (I added a counter of debugging and she never increments).
If nothing is in a time loop, just the latest data points are graphically represented once the sub VI ends. If there is a while loop is nothing in graphic form.
If you have any suggestions I would be very happy.
Hello
It is a very basic question about the principles of data streams in LabVIEW. I suggest asking this question in forums of LabVIEW. You will get good responses and suggestions there. I also suggest that you post your vi there, because it makes things much more clear that describing it with words.
Thank you
Jochen
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