Find in each row of a table

I have a table which had is auto-incremented and i would like to search every record for some values. There is an id
column but it's not incremented by one. In a simpler way, i would like to got to every row and get the values i'm interested in but i don't know how to go to the first row then the second row etc...

Hello g90,
>>but i don't know how to go to the first row then the second row etc...
For this, my understand is that you want return the result one by one in order according to one column, if I am correct, you could have a try with below query syntax:
var result = (from t in db.Orders
orderby t.TestName
select t).Skip(1).Take(1).ToList();
This query would return one record from a collection which is ordered by the TestName column and the returned index is the second position. For the first record one, just remove the Skip() method.
Regadrs.
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Similar Messages

How to find number of rows in a table

i have one table ,it contains millions of record,how can i know number of rows in that table without using count(*),
i tried in user_table ,for the column NUM_ROWS,but it is not showing number of rows,pls send me a solution for this.
regards,
singh

Ok, that only was to show simply that max option
might not an option to reduce execution time.Yes, but I/O variances have a tendency to really skew the observed elapsed execution time - making execution time alone a poor choice to determine what SQL will perform better than another.
Both MAX(ROWNUM) and COUNT(*) results in the same amount of I/O - as both uses the exact same execution plan, I/O wise. In this example, a FTS.
SQL> create table testtab nologging as select * from all_objects where rownum < 10001;
Table created.
-- warmed up the buffer cache with a couple of SELECTs against TESTAB in order
-- to discard PIOs from the results
SQL> set autotrace on
SQL> select count(*) from testtab;
COUNT(*)
10000
Execution Plan
Plan hash value: 2656308840
| Id | Operation | Name | Rows | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 35 (9)| 00:00:01 |
| 1 | SORT AGGREGATE | | 1 | | |
| 2 | TABLE ACCESS FULL| TESTTAB | 9262 | 35 (9)| 00:00:01 |
Note
- dynamic sampling used for this statement
Statistics
0 recursive calls
0 db block gets
131 consistent gets
0 physical reads
0 redo size
223 bytes sent via SQL*Net to client
238 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
1 rows processed
SQL> select max(rownum) from testtab;
MAX(ROWNUM)
10000
Execution Plan
Plan hash value: 2387991791
| Id | Operation | Name | Rows | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 35 (9)| 00:00:01 |
| 1 | SORT AGGREGATE | | 1 | | |
| 2 | COUNT | | | | |
| 3 | TABLE ACCESS FULL| TESTTAB | 9262 | 35 (9)| 00:00:01 |
Note
- dynamic sampling used for this statement
Statistics
0 recursive calls
0 db block gets
131 consistent gets
0 physical reads
0 redo size
225 bytes sent via SQL*Net to client
238 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
1 rows processed
So seeing that we have the exact same baseline for both queries, and that PIO does not influence the results, we time a 1000 executions of both.
SQL> declare
2 cnt number;
3 begin
4 for i in 1..1000
5 loop
6 select count(*) into cnt from testtab;
7 end loop;
8 end;
9 /
PL/SQL procedure successfully completed.
Elapsed: 00:00:03.19
SQL>
SQL> declare
2 cnt number;
3 begin
4 for i in 1..1000
5 loop
6 select max(rownum) into cnt from testtab;
7 end loop;
8 end;
9 /
PL/SQL procedure successfully completed.
Elapsed: 00:00:15.87
SQL>
This shows that what makes the MAX() more expensive is just that - determining the MAX(). For each row, Oracle has to call its internal MAX() function with two values - the current max result and the new value. This function then returns the new max value. This overhead per row adds up to a significant overhead in execution time - making the MAX() approach 5x slower than the COUNT() approach.

For each row of a table call a pl/sql function

Hi,
i have a search form in adf like this:
parameter1:___
parameter2:____
buttonSearch
Table with results
field1 field2 field3
row1 ------ --------- -------
row2 ------ --------- -------
row3 ------ --------- -------
The user inputs the parameters 1 and 2 then press buttonSearch and the query execute and returns rows 1 to 3.
What i need is for each row call pl/sql function and passed the parameter 1 and 2 and field 1 to 3 (plsql function recives 5 parameters (parameter1, parameter2, field1 , field2 and field3) )
my buttonSearch call a java class that execute ExecuteWithParamters method.
I create the call to my plsql function on Application module class and then export as a java interface.
So i have the function to use in the viewcontroller layer, but i don't know where to use it, and how to pass the paramters: the parameter 1 and 2 that user inputs and the row fields.....
any ideas....
thanks!!

Hi,
for this you need to call the PLSQL function upon table rendering, which means that you need a field in the table referencing a managed bean. In the managed bean you can use #{row} and resolve it using a ValueExpression. #{row} gives you access to the current rendered row (this is why you need to do it when the table renders) and thus allows you to call getAttribute(name) to get the values of field 1 - 3. The search field value you should get through the bindings reference (assuming the search form uses ADF). Then you create an operation binding for the executeWithParameters and call operationBindingName.getParamsMap().put(argname, argvalue); on it.
Frank
Ps.: I am concerned about the performance you get and wonder if it isn't possible to create a transient attribute that executes the function and displays the results. As I understand, the search parameters are only to filter the result set, which you still can do

Different values in a list box for each row of the table control...

Dear Experts,
Is it possible to populate different values for each row in a listbox inside a table control ?
Example,
Row 1 in the the table contains A, B & C
Row 2 in the same table contains C, D & E
If yes, How?
yes i am using
call function 'VRM_SET_VALUES'
    exporting
      id     = i_name
      values = i_list.
Thank you .
Message was edited by:
        Kokwei Wong
Message was edited by:
        Kokwei Wong

Hi Wong,
this is code example for listbox
TYPE-POOLS vrm .
DATA: lt_vrm_values TYPE TABLE OF vrm_value.
DATA: wa_vrm_values TYPE vrm_value.
PARAMETER p_list AS LISTBOX VISIBLE LENGTH 10.
INITIALIZATION.
wa_vrm_values-key = 'Key1'.
wa_vrm_values-text = 'Value1'.
APPEND wa_vrm_values TO lt_vrm_values.
wa_vrm_values-key = 'Key2'.
wa_vrm_values-text = 'Value2'.
APPEND wa_vrm_values TO lt_vrm_values.
wa_vrm_values-key = 'Key3'.
wa_vrm_values-text = 'Value3'.
APPEND wa_vrm_values TO lt_vrm_values.
AT SELECTION-SCREEN OUTPUT.
CALL FUNCTION 'VRM_SET_VALUES'
       EXPORTING
            id              = 'P_LIST'
            values          = lt_vrm_values
       EXCEPTIONS
            id_illegal_name = 1
            OTHERS          = 2.
IF sy-subrc 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
To fill it with data from DB, just do select in INITIALIZATION and put that values with same alghoritmus.
Manas M.
P.S.: This is very easy question, you should use search ...

How to find the LOCKED ROWS in a table?

Not locked objects, but for a table the locked rows.

Check below links :
http://www.jlcomp.demon.co.uk/faq/locked_rows.html
How to find the locked row.
who are waiting for same record?
HTH
Girish Sharma

How to get control on each row in advance table

hi, i have a advanced table with some data, in each row i have two radio buttons which i need to set depending on some column value in the row, i tried by following code
for(SoftCompVORowImpl row2 = (SoftCompVORowImpl)svo.first();row2!=null;row2=(SoftCompVORowImpl)svo.next())
if(row2.getAttribute("CommitEndDate")==null || row2.getAttribute("CommitEndDate").equals(""))
onetime.setSelected(true);
recurring.setSelected(false);
else
onetime.setSelected(false);
recurring.setSelected(true);
but this code is making set only one radio button (onetime), which ever i am making first true its getting selected, i need to know how to get control of each row....

Babu,
Basically you should use the decode function in your sql query itself and attach it with BC4J properties of radio buttons.In that case you don't have to worry about setting them declaratively !
--Mukul

Updating a variable based on checking expiration date against now() in each row of a table

I’m using Coldfusion 9,0,0,251028 on Windows 7 64-bit, with a Microsoft Access 97 database.
I’m trying to create a query which loops through all the rows in a table and checks if the current date is later or earlier than the expiration date.
If the expiration date column is earlier than now(), it sets the column “is_current” to 0, which is a variable that controls whether or not a message displays on a different page(breakingnews.cfm).
The column that has the expiration date is “exp_dat” in the table “news”. The query I have so far is:
<cfquery name="expire" datasource="#db#">
update news
set is_current = 0
where exp_dat < now()
</cfquery>
What this ends up doing is filtering out the expired items correctly, but once a new row is inserted, the previous items(which haven’t expired yet)
are still having the “is_current” column set to 0.
The query is cfincluded on the page the messages are supposed to display on (breakingnews.cfm).
How can I get the query to loop over each row every time to check if the now() is earlier or later than “exp_dat” without setting all the other row’s “is_current” to 0?

Two things:
1 - A query will never affect rows you haven't told it to. Therefore if new rows have the is_current set to 0, then it's because you're either setting it so in your insert statement or you've set a default value on the column. Just make sure you set the column to 1 when you insert the new row.
2 - Why are you doing this at all? Say you run your update query (which is relatively intensive) a millisecond before one expires, it'll still be shown on your page. Why are you not just doing "SELECT * FROM mytable WHERE expiration_date > now()"?
Obviously use cfqueryparams, but that's just an example. It seems at the moment all you're doing is storing out-of-date data in a database and causing yourself a lot more work and overhead.

PL/SQL-find out extra rows present in table by comparing 2 similar tables

Hi, can any one give me an idea to find out the extra rows present in table by comparing 2 similar tables using pl/sql.
REQUIREMENT::i am working on the upgrade environment.my previous database has some tables and having data.Now functional folks are adding some new data to the existing tables for the upgrade database.I need to identify that new rows which are added by them.
for this , i created name table with 2 columns n,n1 which contains the table names.
Table Name:Name
columns:n n1
a ax
b bx
c cx
a,b c........are the table names which are in the previous database environment.(approx >1500 tables)These tables having data.
ax,bx,cx..........table names which are in the upgrade environment contains the extra data which is added by the functional folks.
a&ax,b&bx.................(approx 1500 tables) are having same structure except some of them.
Now i want to write a pl/sql program that reads both table names a&ax from name table and then by comparing the rows of a&ax ,i need to find out the extra rows present in the ax table to store that in different place.
Example:
a table
id name
1 co
2 wi
3 il
ax table
id name
1 co
2 wi
3 il
4 va
5 ca
Here i need to find out the difference b/n the 2 tables ,the extra rows id 4,5 and place it some where.

this is just for demo, is this you mean?
SQL> ed
Wrote file afiedt.buf
1 SELECT empno,ename,e.DEPTNO emp_deptno, d.deptno dept_deptno,d.DNAME
2 FROM EMP e full outer join DEPT d
3* on d.DEPTNO= e.DEPTNO
SQL> /
     EMPNO ENAME      EMP_DEPTNO DEPT_DEPTNO DNAME
      7934 MILLER             10          10 ACCOUNTING
      7839 KING               10          10 ACCOUNTING
      7782 CLARK              10          10 ACCOUNTING
    snipp........
      7521 WARD               30          30 SALES
      7499 ALLEN              30          30 SALES
      156 1
12 1
40 OPERATIONS
90 LOGISTIC
18 rows selected.
SQL> ed
Wrote file afiedt.buf
1 SELECT empno,ename,e.DEPTNO emp_deptno, d.deptno dept_deptno,d.DNAME
2 FROM EMP e left outer join DEPT d
3* on d.DEPTNO= e.DEPTNO
SQL> /
     EMPNO ENAME      EMP_DEPTNO DEPT_DEPTNO DNAME
      7934 MILLER             10          10 ACCOUNTING
      7839 KING               10          10 ACCOUNTING
      7782 CLARK              10          10 ACCOUNTING
      7902 FORD               20          20 RESEARCH
    snipp..................
      7654 MARTIN             30          30 SALES
      7521 WARD               30          30 SALES
      7499 ALLEN              30          30 SALES
       156 1
12 1
16 rows selected.
SQL> ed
Wrote file afiedt.buf
1 SELECT empno,ename,e.DEPTNO emp_deptno, d.deptno dept_deptno,d.DNAME
2 FROM EMP e[b] right outer join DEPT d
3* on d.DEPTNO= e.DEPTNO
SQL> /
     EMPNO ENAME      EMP_DEPTNO DEPT_DEPTNO DNAME
      7369 SMITH              20          20 RESEARCH
      7499 ALLEN              30          30 SALES
      7521 WARD               30          30 SALES
      7566 JONES              20          20 RESEARCH
      snipp......................
      7902 FORD               20          20 RESEARCH
      7934 MILLER             10          10 ACCOUNTING
                                         40 OPERATIONS
90 LOGISTIC
16 rows selected.

How to find latest updating row in a table

Hi
How to find latest updating row in a table

ADF 7 wrote:
SELECT * FROM Table WHERE lastupdTimestamp = (SELECT MAX(lastupdTimestamp) FROM Table)lastupdtimestamp - holds and date an time of an records when it last updation takes place in table.
lastupdtimestamp is a column in my table.And how will this make sense in the scenario I've described, where UserA does an update before UserB, but commits the update after UserB's commited update? And add UserC and UserD and a 1000 more users to this scenario where concurrent updates happen.
What actual time does this lastupdtimestamp contain and represent? And why? How is that lastupdtimestamp used in business logic and processing? Or is it just a silly-bugger-let's-add-somekind-of-time column to that table that essentially meaningless?
Not saying that one should never add such a timestamp based column. Simply that one needs to understand WHAT it contains and it needs to be SENSIBLY used within the data model.
However, in my experience such columns are often slapped on afterwards, never featured in the actual data model designed, and is then used without a second though that the database and its data is a multi-user and multi-process system. And things happen at the same time. And things overlap (serialisation is the exception - not the rule).

How to find latest updated row in a table

Hi
Here I have command that display updated time.But I Need which row was lastly updated (show particular row) in that table.
select scn_to_timestamp(max(ora_rowscn))
from employee;

First of all, SCN to timestamp mapping exists for a short period of time, so if change is relatively old you'll get ORA-08181:
SQL> select max(ora_rowscn) from emp;
MAX(ORA_ROWSCN)
22622685
SQL> select scn_to_timestamp(max(ora_rowscn)) from emp;
select scn_to_timestamp(max(ora_rowscn)) from emp
ERROR at line 1:
ORA-08181: specified number is not a valid system change number
ORA-06512: at "SYS.SCN_TO_TIMESTAMP", line 1
SQL> Anyway, based on SCN we can find out which BATCH of table row modifications was committed last. But you can't find out which modification withing that BATCH was made last.
SY.

Connecting Each row to another Table

Hi
This probably isnt the JDBC question but can some one tell me how to Connect each row of a column to another Table.
I have a Table with two columns Name and UserID. I want to connect each UserID to another Table. like User01 will be connected to another table called burn table for user01. User 02 will be connected to another table called burn table for user 02. Each table for user01 and user02 has 3 columns: CDName, EULA, License Key.
I read about primary and foreign keys but can some one give me a hint on this about how to start on it?
And if i get this done, then how would i execute a SQL query command so that I can read the data for each user. I am using java Servlets.
I am new sorry.
-bhaarat

i agree with you that making seperate table for each
user is terrible and i would be ashamed to present
this projec to anyone.
how do you think i should design this database other
than what i have suggested..
i might have alredy explained what the database is
doing but let me do that again..
1. There are about 150 or more CD's from MS.
2. Each user is able to burn a cd once only. for
example if user has already burned xp pro he cant burn
again.
3. there are about 600 or more users(thats why making
each table for each user is wrong, eventhough some one
else will be doing it, instead of me).
4. each cd has a license key associated with it.
please suggest me how i should do this database so its
not much of a hazzle and i dont have to pay some one
100 an hour so fix the problems lol.okay first i am going to list out the table designs and then I am going to provide some explanations
tblUser
username VARCHAR PRIMARY KEY
firstname VARCHAR
lastname VARCHAR
tblCD
cdname VARCHAR PRIMARY KEY
licensekey VARCHAR PRIMARY KEY
eula VARCHAR or TEXT
tblUserCD
username VARCHAR PRIMARY KEY
cdname VARCHAR PRIMARY KEY
licensekey VARCHAR PRIMARY KEY
so what's happening here...
well we have a table for users.. since we need a unique key i am using username... this could be the
name for someone uses to login to your system.
there is a different table that is list of all the cds. the primary key for this one is both the name and license together.
then there is a table that builds a relationship between the two.
in this scheme each user may download or whatnot each cd zero or one times. you can't put a second
download in because that will violate the primary key of tblUserCD
now let's look at some sample data
if the user table has this....
username----firstname----lastname
jsmith----------John----------Smith
aadams-------Audrey--------Adams
and the CD table has this
cdname----license----eula
Access-----12345----blah blah
Word--------12356----blah blah
Windows---99999---blah blah
then we do the following queries when John wants to get Access and Windows and Audrey wants to get Word and Access.
INSERT INTO tblUserCD(username,cdname,licensekey) VALUES('jsmith','Access','12345');
INSERT INTO tblUserCD(username,cdname,licensekey) VALUES('jsmith',Windows,'99999');
INSERT INTO tblUserCD(username,cdname,licensekey) VALUES('aadams','Word','12356');
INSERT INTO tblUserCD(username,cdname,licensekey) VALUES('aadams','Access','12345');
now if you want to get the list of program for any user (example John Smith) you just do this....
SELECT cdname FROM tblUserCD WHERE username='jsmith'
which gives you this
cdname
Access
Windows
there are several pluses to this design
1) as I alluded to earlier this design prevents you putting in the same cd and license key more than once for each user
2) You now can get a nice list of all the CD's easily.
SELECT cdname,licensekety FROM tblCD;
3) if you need to make any changes, like a persons username or more likely the cd stuff then it is easier to do so.. for example in your old design if you wanted to change Access to Access XP you would have to change EVERY table. in the new model you can do this in two queries.
UPDATE tblCD SET cdname='Access XP' WHERE cdname='Access' AND licensekey='12345';
UPDATE tblUserCD SET cdname='Access XP' WHERE cdname='Access' AND licensekey='12345';
(actually if you set up the keys properly and to cascade changes then you would just need the one query)
there is actually a theory for this sort of timesaving and error prevention work called normal form data.
for your further "enjoyment" may I suggest reading this http://databasejournal.com/sqletc/article.php/1443021
anyway hope this helps you out....
does this make sense to you?

How to find newly updated rows in a table

Hi..
How to know newly updated rows in a table.
Thanks in advance
pal

Or other good thing would be to add LAST_UPDATED column to your table, that can reflect the time the row gets updated.
G

Hyperlink to each row(record) of Table

Hi All,
My requirement is I am geting data using Adaper RFC call and displaying in a table.I want all the rows of the
table has hyperlink,so that if i am selecting any row the details of that row should be show in either in another view or window.
Thanks & Regards
muna

Hi
Create an action for the table in the onLeadSelect event.
Get the current node values.
//get the cuttent table node's element value
String id=wdContext.current<TableName>Element().get<Param>();
// set the selected value to next view's element
wdContext.current<nextView>Element().set<param>(id);
//fire the outplug to next view
Create a outboundplug to another view . and call the plug in this action.
Kind Regards
Mukesh

How to find index of row in dynamic table?

Our form has a table to which the user can add rows. We want to be able to edit the custom help text of each field in the row to add the row number for accessibility. But need the index number of the row to reference the row of the fields. And we can't figure out how to get it.
We have tried both the field initialize and field layout events, but our property for index is not being recognized. For the initialize event of one of the fields in the row, we wrote this code:
xfa.host.messageBox("We are in the initialize event for this field.");
var thisRow = this.parent.index;
xfa.host.messageBox(thisRow);
We have the table set up with 8 intial rows. The first message pops up 8 times, but the second doesn't appear at all. How can we get the number of the row we are addressing?
Thanks.

Not sure what's going on there but messageBox() is throwing an error for some reason (use CTRL-J in Acrobat to open the Console):
GeneralError: Operation failed.
XFAObject.messageBox:3:XFA:form1[0]:subMain[0]:Table1[0]:Row1[1]:TextField1[0]:ready
Argument mismatch in property or function argument
It works if you add some text:
xfa.host.messageBox("Row Number: " + thisRow);
app.alert() works: app.alert(thisRow);
And console.println() works (less annoying for testing than popups - open the Console window to see the results):
console.println(thisRow);
Ah, just figured it out - messageBox() doesn't seem to like a number first, it's expecting a string. The following works with your original script:
var thisRow = this.parent.index.toString();

Select count(*) for each row of a table

Hello All,
Following query gives a statistics for each user (how many items he owns, home many tickets authored, how many objects he is subscribed to etc...)
select auser.userid,
(select count(*) from item where owner like '%' || auser.id || '%') ITEM_OWNER_CNT,
(select count(*) from tkt where originator = auser.id) TKT_ORIGINATE_CNT,
(select count(*) from tkt where assigned_to = auser.id) TKT_QA_CNT,
(select count(*) from tkt where create_user = auser.id) TKT_AUTHOR_CNT,
(select count(*) from subscriptions where subscriber_id = auser.id) SUBSCRIPTION_CNT
from
user auser
I was not happy with the performance of this query, so I tried the same using group by. The performance was even worse.
Is there any other option for me to try? Please advice.
Thanks,
Sathish

Hi, Sathish,
As SBH said, a lot depends on your data. Please post some sample data (CREATE TABLE adn INSERT statemetns) for all tables, and the results you want from that data. Describe and give examples of any relationships that are not one-to-one..
You probably want to do joings, like SBH suggested, rather than scalar sub-queries.
The connection between the auser and item tables
(select count(*) from item where owner like '%' || auser.id || '%') ITEM_OWNER_CNT,is very suspicious. Perhaps the item table is poorly designed, and the query would be faster if that table were changed. Is changing the design of the item table an option?
You should be able to get all the information from the tkt table in one pass. It looks like you need to unpivot the data, so instead of one row per ticket (with 3 different people connected to it), there are 3 rows per ticket, each with only 1 person referenced. This is not necessarily a bad table design. Unpivoting, even more than most other things, depends on your database version, so you'll have to tell what version of Oracle you're using.

Find in each row of a table

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