using rownum with order by

Hi all

I want to use rownum with order of clause-

When I use an order clause in the select query, I get so many lines that I don't want.
I have average-i want only two first rows according to the order of.

EG. - Select employee_id, salary of the order of salary employees;
EMPLOYEE_ID, FIRST_NAME SALARY
----------- -------------------- --------
132 2100 TJ
Steven 128 2200
2200 hazelnut 136
James 127 2400
135 Ki 2400

now, I just want to see the first two lines of the output above.
any oneone please help does 
SQL> SELECT *
FROM   (SELECT employee_id,
               first_name,
               salary
        FROM   employees
        ORDER  BY salary)
WHERE  ROWNUM < 3;   2    3    4    5    6    7  

EMPLOYEE_ID FIRST_NAME               SALARY
----------- -------------------- ----------
        132 TJ                         2100
        128 Steven                     2200

Tags: Database

Similar Questions

  • Using ROWNUM with interactive report

    Hi guys,.

    I want to use #ROWNUM # to add the attribute 'id' to 'tr elements '. I can do that for classical report by changing the template. But I can't change the model for IR (interactive report). I add < tr #HIGHLIGHT_ROW id # = "#ROWNUM #" > to the report model classic section 'before each Row.
    But I can't do that for IR. You have an idea?

    Kind regards.

    You don't really have the code. From your code, it seems as the parameter 'el' is the DOM of your TR element, and therefor there is no need your long selector chain.
    Just do the DOM element in a jquery object and start from there:

    $(el).children("td[headers='STARTNOTIFICATIONID']").text()

  • generation of sequence using rownum and order of

    Hi all

    Need to generate a sequence number based on a column value in a table.

    When you try to insert into a table by using the order by and rownum, I am not able to do the same thing.

    Here is a simple example to show this... need help how to insert a sequence field in the base table a column value...

    create table test1(col1 number);


insert into test1 values(1);
insert into test1 values(2);




insert into test1 values(4);
insert into test1 values(3);


    select * from test1;

    1

    2

    4

    3

    Now, I'm trying to insert into test1 values-based test2:

    create table test2(col1 number,seq number);


insert into test2 (select col1,rownum from test1  order by col1 asc);

    ORA-00907: lack of right parenthesis

    So I tried with:

    insert into test2 select col1,rownum from test1  order by col1 asc;

    It worked, but the sequence is not generated according to the ranking...

    COL1SEQ

    11
    22
    34
    43

    can someone please help...

    Thanks in advance...

    MRK...

    Another way would be to use analytical functions. These have the advantange of being independent of the order of... in fact, you could use serveral where everyone has his own sort.

    Select col1

    row_number() over (order by col1 CSA) seq_asc

    row_number() over (order by col1 desc) seq_desc

    of test1

  • Rownum with order of Dates of

    It's raw data; 
    SQL SELECT 
  2  DT             ,
  3  CODE       ,
  4  NO         
  5  FROM TB
  6  WHERE DT BETWEEN TO_DATE('01/01/2000','DD/MM/YYYY') AND TO_DATE('31/12/2009','DD/MM/YYYY')
  7  AND BCODE BETWEEN 'B01' AND 'B01'
  8  AND SCODE BETWEEN 'S07' AND 'S07';

DT        CODE              NO
--------- ------ -------------
21-JAN-08 BUY           11.000
06-JAN-08 BUY           12.000
14-JUL-08 SEL            4.000
15-SEP-08 SEL            5.000
13-JAN-09 SEL            6.000
    I want the result to give me rownum and trient wise dt
    I put this request, but saw only the ranking No. 2 of COL ROWNUM, coming first with dt sorted wise line.
    SQL; SELECT rownum,
  2  DT             ,
  3  CODE       ,
  4  NO         
  5  FROM TB
  6  WHERE DT BETWEEN TO_DATE('01/01/2000','DD/MM/YYYY') AND TO_DATE('31/12/2009','DD/MM/YYYY')
  7  AND   BCODE BETWEEN 'B01' AND 'B01'
  8  AND   SCODE BETWEEN 'S07' AND 'S07'
  9  order by invxh_DATE;

       ROWNUM DT        CODE              NO
------------- --------- ------ -------------
        2.000 06-JAN-08 BUY           12.000
        1.000 21-JAN-08 BUY           11.000
        3.000 14-JUL-08 SEL            4.000
        4.000 15-SEP-08 SEL            5.000
        5.000 13-JAN-09 SEL            6.000
    I want to be generetd wise dt, rownum, something like;
           ROWNUM DT        CODE              NO
------------- --------- ------ -------------
        1.000 06-JAN-08 BUY           12.000
        2.000 21-JAN-08 BUY           11.000
        3.000 14-JUL-08 SEL            4.000
        4.000 15-SEP-08 SEL            5.000
        5.000 13-JAN-09 SEL            6.000

    There is a built-in feature to this:

    SELECT ROW_NUMBER () OVER (ORDER BY dt) rownmbr, dt, code, no
  FROM tb
 WHERE dt BETWEEN TO_DATE ('01/01/2000', 'DD/MM/YYYY')
              AND TO_DATE ('31/12/2009', 'DD/MM/YYYY')
   AND bcode BETWEEN 'B01' AND 'B01'
   AND scode BETWEEN 'S07' AND 'S07';

    Published by: Slow_moe on January 18, 2009 04:19

    Sorry! Of course, it must be a DATE data type...

  • Using ROWNUM with SEQUENCE. NEXTVAL in the select statement

    I have a table emp

    SQL > select * from emp;

    EMPNO, ENAME

    ---------- ----------

    JOHN 5000

    5001 ADAM

    MIKE 5002

    I need help to write a procedure to run ' select EMPNO | ENAME from emp' on a line at a time until the end of the table.

    Try to use the below stated by "N as a sequence.nextval. It does not work. Please help me solve this.

    Select EMPNO | ENAME from EMP

    where rownum < N + 1

    less

    Select EMPNO | ENAME from EMP

    where rownum < N;

    So why not just make something like:

    SQL > select "mysql - host = localhost - user = roor - password = rootpassword e ' create database ' |" " EmpNo | Ename | " » ;"
    2 EMP;

    "MYSQL - HOST = LOCALHOST - USER = ROOR - PASSWORD = ROOTPASSWORD-E" CREATEDATABASE'| "" EMPNO | ENAME | " » ;"
    -------------------------------------------------------------------------------------------------------------------
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7369SMITH database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7499ALLEN database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7521WARD database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7566JONES database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7654MARTIN database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7698BLAKE database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7782CLARK database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7788SCOTT database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7839KING database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7844TURNER database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7876ADAMS database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7900JAMES database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7902FORD database';
    MySQL--host = localhost - user = roor - password = rootpassword EI 'create the 7934MILLER database';

    14 selected lines.

    SQL >

    Then, you can copy and paste the results in a script file and run this script.

    Don't know why you want to wait 15 seconds between each, as the mysql command is not likely to return control to the script until it has finished creating the database (at least that's what would make most of the commands, I use MySQL)

  • Problem with a complete refresh materialized view when using rownum

    Hi all

    I had a problem with rownum when complete using Refresh

    I use rownum when you create the materialized view, and this is the generation properly. But the question was when I even refreshing, rownum was not get sorted in ascending order.

    anyone encountered this scenario

    rownum is determined as the line came out, also "order by rownum" does absolutely nothing.

    http://docs.Oracle.com/CD/B19306_01/server.102/b14200/pseudocolumns009.htm

  • update with order by

    Hi all

    Does anyone know if "in order to" has the priority on "updates"? In other words, by using the following query. Will be sorted first and then locked resulting lines or they will be locked everything first, and then sorted?

    SELECT / * + cardinality (para. 1) use_nl (al t) * / NULL
    LOOSE COLLECTION l_nullvalue_list
    TABLE (i_list), my_table t Al
    WHERE al.id = t.id
    ORDER BY t.id
    FOR the UPDATE OF t.id;

    Any help is appreciated.

    Kind regards
    WF

    It is the case that I do not speak:

    drop table t cascade constraints purge;
create table t as select rownum id, cast('x' as char(100)) pad
                    from dual connect by level <= 10000;

drop table t1 cascade constraints purge;
create table t1(id int);

    -- 1st session
SQL> lock table t1 in exclusive mode;

Table(s) locked

    -- 2nd session
declare
    type t1_type is table of rowid index by binary_integer;
    l_tab t1_type;
begin
    execute immediate 'lock table t1 in share mode';
    select rowid bulk collect into l_tab
      from t order by dbms_random.value
       for update;
end;
/

    -- 3rd session
declare
    type t1_type is table of rowid index by binary_integer;
    l_tab t1_type;
begin
    execute immediate 'lock table t1 in share mode';
    select rowid bulk collect into l_tab
      from t order by dbms_random.value
       for update;
end;
/

    Now 2nd & 3rd sessions are blocked by the 1st. We will release the lock:

    -- 1st session
SQL> commit;

Commit complete

    2nd & 3rd sessions try to lock the rows of the table T, and fails one of the sessions with blocking:

    declare
    type t1_type is table of rowid index by binary_integer;
    l_tab t1_type;
begin
    execute immediate 'lock table t1 in share mode';
    select rowid bulk collect into l_tab
      from t order by dbms_random.value
       for update;
end;

ORA-00060: deadlock detected while waiting for resource
ORA-06512: at line 7

    If you repeat the same scenario with ORDER BY id, then a session will wait to enqueue.
    So, it's all on the order in which the row locks are acquired.

  • So I can pick it up at the factory using F11 with no disc setting?

    So I can pick it up at the factory using F11 with no disc setting?

    Hello

    Recovery files are normally hidden in the Windows Explorer, so it wouldn't be a problem - the only way you can be sure that it works or not is to try it.

    If you find that it does not work, you can order a set of replacement recovery disks using the link below and use them to reinstall the OS.

    http://support.HP.com/us-en/document/c00810334

    If you have a problem with this link, order them directly from HP.

    If you live in the United States, contact HP here.

    If you are in another part of the world, begin here.

    Kind regards

    DP - K

  • Is there a change to use mediaPlayer with InvokeManager?

    Hi I used mediaPlayer with InvokeManager to play streaming video

    But recently the mediaPlayer is unable to read the file

    Perhaps because upgrading to the new operating system

    It's my job

    void DetailPage::invokeMediaPlayer(QString aUrl)
{
InvokeManager invokeManager;
InvokeRequest request;
request.setTarget("sys.mediaplayer.previewer");
request.setAction("bb.action.OPEN");
request.setUri(QUrl(aUrl));
InvokeTargetReply *reply = invokeManager.invoke(request);
}

    When I read the documentation for the new update (release notes)

    Application integration (invocation framework) - in order to adequately support extended characters, the framework of the call games has updated its treatment of URIS to enable clients and targets to better co-ordinate their use of URI. The framework of the appeal now expected valid URIS to spend in their encrypted form to allow the targets to interpret them correctly. For the file URI, handling update ensures that the frame does not change the URI and delivers them as-is. With this change, only receiving targets URIs in invocations should expect to receive coded URIs and are required to decode them.

    What I need to change my code?

    Previously the job very well

    Thank you

    Sorry, in fact there are an error on my video webservice.

    So, there is nothing wrong with mediaPlayer on new SDK (10.0.9.2318)

    Thank you

  • DISTINCT with ORDER BY

    All,

    Facing a problem with the query below... "DISTINCT with Order By Clause.

    His work when we take the same distinct column and order at this time where the query works. But in my case... There are a couple of b/w of joining tables... and are distinct for a column and the order is for a different table with a different column.

    Please suggest me a solution for this below query column in the separate and column used for sorting are different.

    SELECT DISTINCT gl_cc.segment2

    OF gl_code_combinations gl_cc,.

    per_all_people_f req_emp,

    per_all_assignments_f req_emp_assign

    WHERE req_emp.person_id = req_emp_assign.person_id

    AND gl_cc.code_combination_id =

    req_emp_assign.default_code_comb_id

    AND req_emp.full_name = 'xyz '.

    ORDER BY req_emp_assign.last_update_date DESC

    Thank you

    Problem will takes us to Basic!

    Processing order for SELECT statements.

    SQL query(Non recursive SQL) are processed in the following order

    FROM clause

    WHERE clause

    GROUP BY clause

    HAVING clause

    SELECT clause

    ORDER BY clause

    So if you have something in the ORDER BY, but even not Fetch in SELECT it is bound to view the error.

    Given THAT order will work on column projected by SELECT!

    Single table query will fail also.

    Select distinct ename in order by empno emp;

    SQL error: ORA-01791: not a selected expression

    01791 00000 - "not a selected expression.

    * Cause:

    * Action:

    Inclusion of the req_emp_assign.last_update_date in the select column is necessary for order processing

  • Separate option is not allowed with Order By.

    Hi all
    I use a parameter in a query for a report like this:

    Select Name, Id
    of employees, emp_orders
    where employees.id = emp_orders.id - table employees is the master
    and (: order_type_id is null or)
    ((: order_type_id = emp_orders.order_type_id)) -: order_type_id is the user setting
    order of employees.seq_no

    the above query runs successfully but it doubles the data for employees with more than one order, if it has two orders, as it returns records for same twice and if it is of three that it returns the same records for three times!
    I tried to fix it by putting the Distinct after select Word option, but in this case, it gives me this error:
    ORA-01791: not a SELECTed expression

    and when I remove the order by expression data duplication is gone like wanted!

    How to solve the problem please? Thank you
    Note: I use Oracle reports 6i

    http://ORA-01791.ora-code.com/

    Separate option is not allowed with Order By.

    Why

    SQL> with t as
  2  (
  3    select 1 id, 'str' str from dual union all
  4    select 2 id, 'str' str from dual union all
  5    select 1 id, 'str' str from dual
  6  )
  7  select id, str from t
  8  order by id, str
  9  /

        ID STR
---------- ---
         1 str
         1 str
         2 str

SQL>
SQL> with t as
  2  (
  3    select 1 id, 'str' str from dual union all
  4    select 2 id, 'str' str from dual union all
  5    select 1 id, 'str' str from dual
  6  )
  7  select distinct id, str from t
  8  order by id, str
  9  /

        ID STR
---------- ---
         1 str
         2 str

SQL>

    You can try to group by

    SQL> with t as
  2  (
  3    select 1 id, 'str' str from dual union all
  4    select 2 id, 'str' str from dual union all
  5    select 1 id, 'str' str from dual
  6  )
  7  select id, str from t
  8  group by id, str
  9  order by id, str
 10  /

        ID STR
---------- ---
         1 str
         2 str

SQL>

  • Can I use Muse with an existing Web site?

    Can I use Muse with existing websites created with the Adobe? Or can I import a site I created with Dreamweaver in Muse?

    Post edited by: Corey@Adobe

    You will be able to import an existing site that has been created outside of the Muse, or the site that is created when you export as HTML of Muse.

    You must use the original .muse file in order to edit your site.

    Post edited by: Corey@Adobe

  • index for a similar request with order of

    Hello

    I have a table with an ID number and the channels as follows:
    CategoryParentChild
-----------------------------
parentId
childId
isFolder
parentPath
bookName
    I want to get all the books whose parentPath begins with a string where a like clause.

    I have an index on the table as such: (isFolder, parentPath, bookname)

    My request is as follows, where the: likepath parameter will be something like "/ abc/def/%" and I want all the books whose parentPath starts with/abc/def /.
    select pc.childId from CategoryParentChild pc
where pc.isFolder='F' and pc.parentPath like :likepath
order by pc.isFolder, pc.parentPath, pc.bookName
    I guess that Oracle will see that my generic is only at the end of the: likepath parameter and use the indexes without doing a table scan. Is this true? IsFolder and parentPath are also the where clause arguments and parentPath and bookName are used in the order of. I hope so that Oracle uses not only the index to select books of candidates whose parentPath begins with a string of path, but also uses the same index to sort optimally. Does anyone know if I made the right choice with the ordered index? NOTE: it seemed that even if isFolder is always 'F' (false) in the query, it seems that I need it include redundantly in order by to ensure that Oracle can use the index to the place where both of the order of.

    Thank you
    Andy

    If the Joker is at the end of the searched string, Oracle should consider using the index. If it does will depend on an estimate of the Oracle of the selectivity of the condition (i.e. WHERE parentPath AS ' / %' is going to be radically less likely than parentPath AS ' / abc/def/ghi/somethingElse/foo/%'). It can get a little complicated depending on the version of Oracle if the selectivity of the different search conditions is significantly different. If you're on 11g, adaptive cursor sharing helps a little. But on 10g, it is possible that the first person who executes the query enters a state very not selective, Oracle optimizes the query for this binding variable value, do a table scan, and then the future queries use the wrong path.

    Justin

  • Not able to use FORALL with BULKCOLLECT

    Hello
    I have a requirement where I have to use FORALL with BULKCOLLECT to ensure maximum performance optimization. Now, I just read that the SQL statements that can be used in FORALL are just the Inserts, deletes and updates.

    In my case, I have to call a stored procedure. How can I do? Help, please.

    Pseudocode:

    LOOP

    GET BULK calco GATHER IN v_GrantRec LIMIT v_Array_Size;

    FORALL i IN 1.v_Array_Size.COUNT
    Hello (v_GrantRec (i). X, v_GrantRec (i). Y);

    END LOOP;
    CLOSE Calc;
    COMMIT;

    What exactly you expect it to do for you?
    ForAll is designed to process batches of DML in order to avoid the change of PL/SQL to SQL context.
    Has no relevance to what you're trying to do.

    If you don't want to call the procedure several times, you must rewrite it to there the cursor to the function, then have the function to process all the records.

    Carl

  • [10g] need help with order by hierarchical query clause

    I have the following data samples:
    CREATE TABLE     bill_test1
(     parent_part     CHAR(25)
,     child_part     CHAR(25)
,     line_nbr     NUMBER(5)
,     qty_per          NUMBER(9,5)
);

INSERT INTO bill_test1 VALUES ('ABC-1','ABC-10',100,1);
INSERT INTO bill_test1 VALUES ('ABC-1','ABC-20',200,2);
INSERT INTO bill_test1 VALUES ('ABC-1','ABC-30',300,3);
INSERT INTO bill_test1 VALUES ('ABC-1','HARDWARE-1',401,10);
INSERT INTO bill_test1 VALUES ('ABC-1','HARDWARE-2',402,5);
INSERT INTO bill_test1 VALUES ('ABC-10','ABC-155',100,2);
INSERT INTO bill_test1 VALUES ('ABC-10','HARDWARE-1',200,1);
INSERT INTO bill_test1 VALUES ('ABC-155','RAW-2',100,4.8);
INSERT INTO bill_test1 VALUES ('ABC-155','HARDWARE-3',200,3);
INSERT INTO bill_test1 VALUES ('ABC-20','RAW-1',100,10.2);
INSERT INTO bill_test1 VALUES ('ABC-30','RAW-3',100,3);
    And the following query gives me exactly what I want, in the order I want. However, I wonder if there is a way to get this order without creating the column SEQ, given that I don't need in my results
    SELECT     part_nbr
,     parent_part
,     child_part
FROM     (
     SELECT     CONNECT_BY_ROOT b.parent_part                         AS part_nbr
     ,     b.parent_part
     ,     b.child_part
     ,     SYS_CONNECT_BY_PATH(b.line_nbr,' ')                    AS seq
     FROM     bill_test1 b
     ,     dual
     CONNECT BY     parent_part     = PRIOR child_part
     )
WHERE          part_nbr     = 'ABC-1'
ORDER BY     seq
;

Results of above query, except with SEQ included in SELECT (just to show what I'm sorting off of):
PART_NBR                     PARENT_PART                  CHILD_PART                   SEQ
---------------------------- ---------------------------- ---------------------------- -----------------
ABC-1                        ABC-1                        ABC-10                        100
ABC-1                        ABC-10                       ABC-155                       100 100
ABC-1                        ABC-155                      RAW-2                         100 100 100
ABC-1                        ABC-155                      HARDWARE-3                    100 100 200
ABC-1                        ABC-10                       HARDWARE-1                    100 200
ABC-1                        ABC-1                        ABC-20                        200
ABC-1                        ABC-20                       RAW-1                         200 100
ABC-1                        ABC-1                        ABC-30                        300
ABC-1                        ABC-30                       RAW-3                         300 100
ABC-1                        ABC-1                        HARDWARE-1                    401
ABC-1                        ABC-1                        HARDWARE-2                    402

    Hello

    As long as there is that a single root, brothers and SŒURS of ORDER BY, you say, but you can not do in a subquery (well, you can, but usually there is no interest in a subquery). If the CONNECT BY in a subquery, there is no guarantee that the main request will preserve the hierarchical order which provides the subquery.

    The query you posted does not require a query of Tahina, so you can say:

    SELECT     CONNECT_BY_ROOT b.parent_part                         AS part_nbr
,     b.parent_part
,     b.child_part
--,     SYS_CONNECT_BY_PATH(b.line_nbr,' ')                    AS seq
FROM     bill_test1 b
WHERE          CONNECT_BY_ROOT b.parent_part     = 'ABC-1'
CONNECT BY     parent_part     = PRIOR child_part
ORDER SIBLINGS BY     b.line_nbr
;

    I said the query you posted does not require a subquery. It also does not require double, so I guess that what you posted is a simplification of what you are really doing, and that could have a subquery. In particular, if you want to GROUP BY part_nbr, you need the subquery. We can use CONNECT_BY_ROOT expression in the WHERE clause (or, come to think of it, use a START WITH clause instead WHERE), but, for some reason, we cannot use CONNECT_BY_ROOT in a clause GROUP BY; We need to calculate CONNECT_BY_ROOT in a subquery, give it a name (like part_nbr) and Super GROUP OF this column in a query.

    This requires that there is that one node root. ORDER OF brothers and SŒURS means just that: children of a common parent will appear in the order, but the root nodes, which have no parents, may not be in order.

    Here's what I meant by using START WITH place WHERE:

    SELECT     CONNECT_BY_ROOT b.parent_part                         AS part_nbr
,     b.parent_part
,     b.child_part
--,     SYS_CONNECT_BY_PATH(b.line_nbr,' ')                    AS seq
FROM     bill_test1 b
START WITH     b.parent_part     = 'ABC-1'
CONNECT BY     parent_part     = PRIOR child_part
ORDER SIBLINGS BY     b.line_nbr
;

    This should be much more effective, because it reduces the results before waste you your time by getting their descendants.
    With the help of a clause START WITH here is analogous to me sending you an email, saying "come to a meeting one my office at 03:00."
    By using a WHERE clause here is similar by sending me an e-mail to all members of society, saying: "come to a meeting one my office at 3:00" and then, as people get here, tell everyone except you could go back.

    Brothers and SŒURS ORDER BY was introduced in Oracle 9.

    Published by: Frank Kulash, December 9, 2010 14:39
    Added version with the START WITH clause

Maybe you are looking for