To select particular rows from order by select query

Hi all,
I want to select particular rows from a order by select query like...
select * from emp order by ename;
If i pass 3 and 7 dynamically in where clause or something like that, it has to show rows from 3 to 7 only.
Thanks in advance
Pal

This?
SQL> select *
from (
   select e.*,
      row_number() over (order by ename) rn
   from emp e)
where rn in (3,7)
EMPNO ENAME      JOB         MGR HIREDATE         SAL       COMM     DEPTNO RN
7698 BLAKE      MANAGER    7839 01-MAY-81       2850                    30 3
7566 JONES      MANAGER    7839 02-APR-81       2975                    20 7
2 rows selected.

Similar Messages

How to efficiently select random rows from a large table ?

Hello,
The following code will select 5 rows out of a random set of rows from the emp (employee) table
select *
from (
       select ename, job
         from emp
       order by dbms_random.value()
where rownum <= 5my concern is that the inner select will cause a table scan in order to assign a random value to each row. This code when used against a large table can be a performance problem.
Is there an efficient way of selecting random rows from a table without having to do a table scan ? (I am new to Oracle, therefore it is possible that I am missing a very simple way to perform this task.)
thank you for your help,
John.
Edited by: 440bx on Jul 10, 2010 6:18 PM

Have a look at the SAMPLE clause of the select statement. The number in parenthesis is a percentage of the table.
SQL> create table t as select * from dba_objects;
Table created.
SQL> explain plan for select * from t sample (1);
Explained.
SQL> @xp
PLAN_TABLE_OUTPUT
Plan hash value: 2767392432
| Id | Operation           | Name | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT    |      |   725 | 70325 |   289   (1)| 00:00:04 |
|   1 | TABLE ACCESS SAMPLE| T    |   725 | 70325 |   289   (1)| 00:00:04 |
8 rows selected.

How to select multiple rows from List Of Values

Hello,
I use ADF 11g to create my list of values (LOV). I want to select multiple rows from it. but i can't.
so how i can select many rows to set them in my adf table.
Thank in advance

Hi,
LOV is map to an attribute in the viewObject so it will return only one value or more values from selected row. You can't select multiple rows from LOV.
But you can do this by using popup which you can select multiple rows and insert the selected rows to another table.
This blog post explain how to achieve this :
http://husaindalal.blogspot.com/2009/11/search-from-popup-and-add-to-new-table.html#comments
Sameh Nassar

How can i select some row from multiple row in the same group of data

I want to select some row from multiple row in the same group of data.
ColumnA
Column B
1 OK
1 NG
2 NG
2 NG
3 OK
3 OK
I want the row of group of
ColumnA if ColumnB contain even 'NG'
row , select only one row which Column B = 'NG'
the result i want =
ColumnA Column B
1 NG
2 NG
3 OK
Thank you

That's some awful explanation, but I think this is what you were driving at:
DECLARE @forumTable TABLE (a INT, b CHAR(2))
INSERT INTO @forumTable (a, b)
VALUES
(1, 'OK'),(1, 'NG'),
(2, 'NG'),(2, 'NG'),
(3, 'OK'),(3, 'OK')
SELECT f.a, MIN(COALESCE(f2.b,f.b)) AS b
FROM @forumTable f
LEFT OUTER JOIN @forumTable f2
ON f.a = f2.a
AND f.b <> f2.b
GROUP BY f.a

When selecting a row from a view with a nested table I want just ONE entry returned

Does a nested table in a view "EXPLODE" all values ALWAYS no matter the where clause for the nested table?
I want to select ONE row from a view that has columns defined as TYPE which are PL/SQL TABLES OF other tables.
when I specify a WHERE clause for my query it gives me the column "EXPLODED" with the values that mathc my WHERE clause at the end of the select.
I dont want the "EXPLODED" nested table to show just the entry that matches my WHERE clause. Here is some more info:
My select statement:
SQL> select * from si_a31_per_vw v, TABLE(v.current_allergies) a where a.alg_seq
=75;
AAAHQPAAMAAAAfxAAA N00000 771 223774444 20 GREGG
CADILLAC 12-MAY-69 M R3
NON DENOMINATIONAL N STAFF USMC N
U
E06 11-JUN-02 H N
05-JAN-00 Y Y
USS SPAWAR
353535 USS SPAWAR
SI_ADDRESS_TYPE(NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NUL
L, NULL)
SI_ADDRESS_TAB()
SI_ALLERGY_TAB(SI_ALLERGY_TYPE(69, 'PENICILLIN', '11-JUN-02', NULL), SI_ALLERGY
TYPE(74, 'SHELLFISH', '12-JUN-02', NULL), SIALLERGY_TYPE(68, 'PEANUTS', '13-J
UN-02', NULL), SI_ALLERGY_TYPE(75, 'STRAWBERRIES', '13-JUN-02', NULL))
SI_ALLERGY_TAB()
75 STRAWBERRIES 13-JUN-02
*******Notice the allergy entry of 75, Strawberries, 13-JUN-02 at the
end. This is what I want not all the other exploded data.
SQL> desc si_a31_per_vw
Name Null? Type
........ Omitted uneeded previous column desc because of metalink
character limit but the view is bigger then this.......
DEPT_NAME VARCHAR2(20)
DIV_NAME VARCHAR2(20)
ADDRESSES SI_ADDRESS_TAB
CURRENT_ALLERGIES SI_ALLERGY_TAB
DELETED_ALLERGIES SI_ALLERGY_TAB
SQL> desc si_allergy_tab
si_allergy_tab TABLE OF SI_ALLERGY_TYPE
Name Null? Type
ALG_SEQ NUMBER
ALG_NAME VARCHAR2(50)
START_DATE DATE
STOP_DATE DATE
SQL> desc si_allergy_type
Name Null? Type
ALG_SEQ NUMBER
ALG_NAME VARCHAR2(50)
START_DATE DATE
STOP_DATE DATE

Can you explain what do you mean by the following?
"PL/SQL tables (a.k.a. Index-by tables) cannot be used as the basis for columns and/or attributes"There are three kinds of collections:
(NTB) Nested Tables
(VAR) Varrying Arrays
(IBT) Index-by Tables (the collection formerly known as "PL/SQL tables")
NTB (and VAR) can be defined as persistent user defined data types, and can be used in table DDL (columns) and other user defined type specifications (attributes).
SQL> CREATE TYPE my_ntb AS TABLE OF INTEGER;
SQL> CREATE TABLE my_table ( id INTEGER PRIMARY KEY, ints my_ntb );
SQL> CREATE TYPE my_object AS OBJECT ( id INTEGER, ints my_ntb );
/IBT are declared inside stored procedures only and have slightly different syntax from NTB. Only variables in stored procedures can be based on IBT declarations.
CREATE PROCEDURE my_proc IS
   TYPE my_ibt IS TABLE OF INTEGER INDEX BY BINARY_INTEGER; -- now you see why they are called Index-by Tables
   my_ibt_var my_ibt;
BEGIN
   NULL;
END;That sums up the significant differences as it relates to how they are declared and where they can be referenced.
How are they the same?
NTB and VAR can also be (non-persistently) declared in stored procedures like IBTs.
Why would you then ever use IBTs?
IBTs are significantly easier to work with, since you don't have to instantiate or extend them as you do with NTB and VAR, or
Many other highly valuable PL/SQL programs make use of them, so you have to keep your code integrated/consistent.
There's a lot more to be said, but I think this answers the question posed by Sri.
Michael

Newbie question: Select one row from table in PL/SQL

Hi,
I want to select one row from the table Employee where Emplyoyee Number is say 200. This is a simple SQL query, but I don't know the equivalent PL/SQL format. I will have 3 out params here - Id itself, Name, Salary. I will then have to populate a java resultset object from these out params.
Later, I'll have to use cursors to retrieve more than one row.
Thanks for any help.

Perhaps something like
CREATE OR REPLACE PROCEDURE get_employee( l_id IN OUT employee.id%TYPE,
                                          l_name OUT employee.name%TYPE,
                                          l_salary OUT employee.salary%TYPE )
AS
BEGIN
SELECT name, salary
    INTO l_name, l_salary
    FROM employee
   WHERE id = l_id;
END;Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

How to select a row from duplicate set of records?

I want to select a row from a duplicate set of records.
below is the explanation of my requirement.
select * from test_dup;
COL_BILL     COL_SERV     COL_SYS
b1     s1     c
b1     s1     g
b1     s2     c
b1     s2     g
b2     s2     g
b2     s3     c
b2     s3     g
b3     s3     c
Here what I want is, for a distinct col_sys if col_bill and col_serv is same then I need the row where col_sys='c'
from the above result set I need the following:
b1     s1     c
b1     s2     c
b2     s3     c
I am using the following SQL query which is giving me the correct result set. But it will hamper the performance because there are total 45 columns in the table and total volume is around 50 million.
select * from test_dup where col_bill||col_serv in (
select col_bill||col_serv from (
select col_bill,col_serv,count(*) from test_dup
where col_sys in ('c','g')
group by col_bill,col_serv having count(*) >1)) and
col_sys='c';
Can anyone please provide me the optimize SQL query for the same.

Hi,
Another way,
SQL> with test_dup
as
     select 'b1' col_bill, 's1' col_serv, 'c' col_sys from dual union all
     select 'b1', 's1', 'g' from dual union all
     select 'b1', 's2', 'c' from dual union all
     select 'b1', 's2', 'g' from dual union all
     select 'b2', 's2', 'g' from dual union all
     select 'b2', 's3', 'c' from dual union all
     select 'b2', 's3', 'g' from dual union all
     select 'b3', 's3', 'c' from dual
select col_bill, col_serv, min(col_sys) col_sys
    from test_dup
   where col_sys in ('c', 'g')
group by col_bill, col_serv
having count( * ) > 1
     and count(nullif(col_sys, 'g')) > 0;
CO CO C
b1 s1 c
b2 s3 c
b1 s2 c
3 rows selected.Regards
Peter
Edited by: Peter on Feb 18, 2009 1:10 AM
- Added test data, thanks Karthick

Select a row from a table and throw an url

Hi experts,
I'm trying to select a row from a table in Visual Composer. What I need to do it's to click over this row and throw an Url. At the moment, I've added a column with a Pushbutton with the formula to show the link; it works fine. But I need to do it without buttons just selecting the row.
Is there anyboby who knows about that?
Thanks a lot.
Belen

Hi
To do this you will have to use a data store and a guard condition on the line which is triggered by the select action. You need to store a value in the data store each time a select action is performed. The guard condition should check for this and only perform the action when the value in the data store is greater than 0.
Jarrod Williams

Select multiple rows from dual table

Is it possible to select multiple rows from dual table using a single select statement.
i.e., i want the out put to be
column_name
1
2
3
4
Edited by: vidya.ramachandra on Dec 14, 2009 8:24 AM

Aside from the fact you're responding to an old thread...
1002424 wrote:
While using CONNECT BY, I see it always leave behind one row.
Suppose I have a condition based on which I have to generate constant rows like
SELECT 1 FROM DUAL WHERE ROWNUM < N;
Here if N = 0, still it gives out single row.... you are obviously doing something wrong in your code elsewhere, because that SQL statement does not always return a single row...
SQL> SELECT 1 FROM DUAL WHERE ROWNUM < 0;
no rows selected
SQL>

Easy Question:Select many rows from a table and execute BAPI for these rows

Hi Experts,
I have created one WD project. The WD project fetches some records of backend using BAPI and displays in a table. I have to select some rows from the table and then execute BAPI for selected rows.
How I can select multiple records from the table and then execute another BAPI for selected rows.
Regards,
Gary

Hi,
In the Node which you binded to the table create one more attribute of type boolean.
For example your node is as below:
//Table Node
TableNode
> Att1
> Att2
> isSelected(boolean) - Newly created attribute for this requirement.
//Result Node contains the elements selected in TableNode
ResultNode
>Att1
>Att2
Now in the table create one more Column with Checkbox as tablecell editor. Now bind this boolean attribute to that check box.
Now in the code you can get the selected rows by user as below:
for(int i=0;i<TableNode().size();i++)
if(wdContext.nodeTableNode().getTableNodeElementAt(i).getIsSelected()==true)
    IPrivateTestView.IResultNode element=wdContext.createResultNodeElement();
    element.setAtt1(wdContext.nodeTableNode().getTableNodeElementAt(i).getAtt1());
    element.setAtt2(wdContext.nodeTableNode().getTableNodeElementAt(i).getAtt2());
   wdContext.nodeResultNode().addElement(element);
Regards,
Charan

Selecting Multiple Rows from ALV GRID Display

Hi,
I am having a ALV GRID Display. I want to select multiple rows from the Output and move them to an internal table.
Please let me know how do I acheive this.
Thanks in advance,
Ishaq.

Hi,
Have a look on the following code. It displays the selected rows which hv been selected in basic list.
TABLES:
spfli.
TYPE-POOLS:
slis.
DATA:
BEGIN OF t_spfli OCCURS 0,
    checkbox.
        INCLUDE STRUCTURE spfli.
DATA: END OF t_spfli.
DATA:
t_sspfli LIKE STANDARD TABLE OF t_spfli .
DATA:
fs_spfli LIKE LINE OF t_sspfli.
DATA:
fs_layout TYPE slis_layout_alv,
w_program TYPE sy-repid.
SELECT *
FROM spfli
INTO CORRESPONDING FIELDS OF TABLE t_spfli.
*fs_layout-info_fieldname = 'COLOR'.
fs_layout-box_fieldname = 'CHECKBOX'.
w_program = sy-repid.
CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'
EXPORTING
    i_callback_program       = w_program
    i_callback_pf_status_set = 'FLIGHT'
    i_callback_user_command = 'SPFLI_INFO'
    i_structure_name         = 'SPFLI'
    is_layout                = fs_layout
TABLES
    t_outtab                 = t_spfli
EXCEPTIONS
    program_error            = 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.
*&      Form FLIGHT
      text
     -->RT_EXTAB   text
FORM flight    USING rt_extab TYPE slis_t_extab..
SET PF-STATUS 'FLIGHT' EXCLUDING rt_extab.
ENDFORM.                    "FLIGHT
*&      Form SPFLI_INFO
      text
     -->UCOMM      text
     -->SELFIELD   text
FORM spfli_info USING ucomm LIKE sy-ucomm
                       selfield TYPE slis_selfield.
selfield-refresh = 'X'.
CASE ucomm.
    WHEN 'FLIGHT'.
      LOOP AT t_spfli.
        IF t_spfli-checkbox = 'X'.
          t_spfli-checkbox = ' '.
         t_spfli-color = 'C51'.
          MODIFY t_spfli TRANSPORTING checkbox.
          fs_spfli = t_spfli.
          APPEND fs_spfli TO t_sspfli.
        ENDIF.
      ENDLOOP.
    WHEN 'EXIT'.
      LEAVE PROGRAM.
ENDCASE.
CLEAR fs_spfli.
fs_layout-info_fieldname = 'COLOR'.
fs_layout-confirmation_prompt = 'X'.
fs_layout-key_hotspot = 'X'.
CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'
    EXPORTING
      i_callback_program = w_program
      i_structure_name   = 'SFLIGHT'
      is_layout          = fs_layout
    TABLES
      t_outtab           = t_sspfli
    EXCEPTIONS
      program_error      = 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.
REFRESH t_sspfli.
ENDFORM.                    "SPFLI_INFO
Regards,
Chandu

Selecting multiple rows from List-component

Hi
Could someone give me an example how to programmatically select multiple rows from List-component?
I know that this selects one row: lst_example.selectedIndex = 1;
But how about selectin indexes 1,2 and 4 for example?

selectedIndices
A Vector of ints representing the indices of the currently selected item or
items...
var si:Vector.<int> = new Vector.<int>;
si.push(1);
si.push(2);
si.push(4);
list.selectedIndices = si;

Randomly selecting some rows from the database table

Hi can some one help me in selecting some rows from a database table which has around 90,000 rows.
Thanks.

One thing you might try is the "sample" clause if you have 8i which is supposed to return a random percentage of the table. Say for example, you have a sequence number on your table as the pkey. Then you might try:
select * from <table_name> where pkey in(select pkey from <table_name> sample(10));
This should give you a random 10 percent of the rows in the table but I tried this once and the results seemed unpredictable. For example it returned a different number of rows each time even though the number of rows in the table didn't change.
Hope this works for you.

How do I select a row from the middle of a recordset?

UserID QuestionID Answered
10 9 N
10 8 N
10 7 N
10 6 N
10 5 Y
10 4 Y
10 1 Y
From the table sorted by QuestionID DESC, how do I select the first row from the bottom going up with Answered value equal to 'N'?
Which in the example above would be:
10 6 N
I need to select this row and get the QuestionID value equal to 6.
Right now I have:
select QuestionID
from tblMap
where Answered = 'N'
and ROWNUM = 1
order by QuestionID ASC;
This always the top most row, which would be:
10 9 N

Here i used DUAL to generate a list of numbers for me.
ME_XE?select *
2 from
3 (
4     select row_number() over (order by col1 desc) as rn, count(*) over() as cnt, col1
5     from
6     (
7        select level as col1 from dual connect by level <= 9
8     )
9 )
10 where ceil(cnt/2) = rn
11 /
                RN                CNT               COL1
                 5                  9                  5
1 row selected.
Elapsed: 00:00:00.07
ME_XE?Edited by: Tubby on Jul 8, 2009 1:47 PM
Seems i misread the question :)

Fetching a partial range of selected result rows from the client side

It has been a while since I started trying to solve this Oracle puzzle.
Basically, what I need it is a way to fetch from the client side a run-time
defined range of result rows of a arbitrary SELECT query.
In low-end databases like MySQL I can do it simply by appending the LIMIT
argument to the end of the SELECT query statment passing the number of
the first row that I want to be returned from the server from the total
result rows available in the result set and the maximum number of rows
that it may return if available.
In higher end databases I am supposed to use server side cursors to skip
any initial rows before the first that I want to retrieve and fetch only
the rows I want up to the given limit.
I am able to achieve this with PostgreSQL and Microsoft SQL server, but I
am having a hard time with Oracle. The main problem is how do I fetch
result rows from a server side cursor and have their data returned to a
client side in a result set like in a straight SELECT query?
I was able to create a cursor and fecth a row into a server side record
variable with the following PL/SQL code.
DECLARE
CURSOR c IS SELECT * FROM my_table;
my_row c%ROWTYPE;
BEGIN
OPEN c;
FETCH c INTO my_row;
CLOSE c;
END;
I want to do this from PHP, so I don't have client side ESQL variables to
store the result set data structure. Anyway, if I can do it just with
SQLPlus I should be able to do it in PHP.
If I do straight SELECT I can get the result set, but in a PL/SQL script
like the one above I don't seem to be able to select the data in the
fetched row record to have returned to the client. Does a straight SELECT
query sends the result rows to a default client side variable?
If anybody can help, I would appreciate if you could mail me at
[email protected] because I am not able to access this forum all the time in
the Web. BTW, is it possible to access this forum by e-mail?
Thanks in advance,
Manuel Lemos
null

Hello Jason,
On 03-Feb-00 05:34:14, you wrote:
I'm not sure I totally understand your problem, but I think you might be able
to solve it by using the ROWNUM variable. ROWNUM returns the sequenc number
in which a row was returned when first selected from a table. The first row
has ROWNUM = 1, the second has ROWNUM = 2, etc. Just remember that the
ROWNUM is assigned as soon as it's selected, even before an order by. So if
you have an order by clause, it'll mess it up. Here's an example. I hope
that helps.I though of that before but it doesn't help because if you use ORDER BY the
first result row might not have ROWNUM=1 and so on. Another issue is that
I want to be able to skip a given number of result rows before returning
anything to the client.
The only way I see to do it is to get the rows with server side cursor.
But how do I return them to the client? Where does a normal select returns
the rows? Isn't there a way to specify that the fetch or something else
return the rows there?
Regards,
Manuel Lemos
Web Programming Components using PHP Classes.
Look at: http://phpclasses.UpperDesign.com/?user=[email protected]
E-mail: [email protected]
URL: http://www.mlemos.e-na.net/
PGP key: http://www.mlemos.e-na.net/ManuelLemos.pgp
null

To select particular rows from order by select query

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