ONE ROW PER TYPE

Hi ,
I have go three tables. personnel, Personnel_degree, and code_types
here is how they are related . Personnel Stores the person informations like id,name etc. Personnel_degree stores personnel_id, degree_id, , degree_date and code_types stores the code_id and code_name , personnel can belinked to personnel_degree though personel_id and the personnel_degree can be linked though the code_id . Each person can have BS, MS OR PHD , the can have any one of them , two of them or all of them . I want to write a sql query so it brings me the person name and the highest degree he has earned. if John has a PHD degree, then he should not appear under master and BS. Similalry if SAMS has got MS & BS , he should not appear under BS , he should appear under MS only.
Thanks
-Feroz

You will need to work out your join conditions. The "Magic" is in the decode statement.
I did it with a decode because I did not know what version you are running, so this will work whether your at 9i or not
Example:
SELECT f_name, DECODE(MAX(DECODE(degree, 'PHD', 3, 'MS', 2, 'BS', 1)), 1, 'BS', 2, 'MS', 3, 'PHD') degree
FROM test
GROUP BY f_name

Similar Messages

Parse column with csv string into table with one row per item

I have a table (which has less than 100 rows) - ifs_tables that has two columns: localtable and Fields. Localtable is a table name and Fields contains a subset of columns from that table. Fields is a comma delimited list: 'Fname,Lname'. It looks like
this:
localtable         fields
========= =============
customertable   fname,lname
accounttable     type,accountnumber
Want to end up with a new table that has one row per column. It should look like this:
TableName             ColumnName
============ ==========
CustomerTable        Fname
CustomerTable        Lname
AccountTable          Type
AccountTable          AccountNumber
Tried this code but have two issues (1) My query using the Splitfields functions gets "Subquery returned more than 1 value" (2) some of my Fields has hundreds of collumns in the commas delimited list. It will returns "Msg 530, Level 16, State
1, Line 8. The statement terminated. The maximum recursion 100 has been exhausted before statement completion.maxrecursion greater than 100." Tried adding OPTION (maxrecursion 0) in the Split function on the SELECT statment that calls the CTE, but
the syntax is not correct.
Can someone help me to get this sorted out? Thanks
DROP FUNCTION [dbo].[SplitFields]
go
CREATE FUNCTION [dbo].[SplitFields]
@String NVARCHAR(4000),
@Delimiter NCHAR(1)
RETURNS TABLE
AS
RETURN
WITH Split(stpos,endpos)
AS(
SELECT 0 AS stpos, CHARINDEX(@Delimiter,@String) AS endpos
UNION ALL
SELECT endpos+1, CHARINDEX(@Delimiter,@String,endpos+1)
FROM Split
WHERE endpos > 0
SELECT 'Id' = ROW_NUMBER() OVER (ORDER BY (SELECT 1)),
'Data' = SUBSTRING(@String,stpos,COALESCE(NULLIF(endpos,0),LEN(@String)+1)-stpos)
FROM Split --OPTION ( maxrecursion 0);
GO
IF OBJECT_ID('tempdb..#ifs_tables') IS NOT NULL DROP TABLE #ifs_tables
SELECT *
INTO #ifs_tables
FROM (
SELECT 'CustomerTable' , 'Lname,Fname' UNION ALL
SELECT 'AccountTable' , 'Type,AccountNumber'
) d (dLocalTable,dFields)
IF OBJECT_ID('tempdb..#tempFieldsCheck') IS NOT NULL DROP TABLE #tempFieldsCheck
SELECT * INTO #tempFieldsCheck
FROM
( --SELECT dLocaltable, dFields from #ifs_tables
SELECT dLocaltable, (SELECT [Data] FROM dbo.SplitFields(dFields, ',') ) from #ifs_tables
) t (tLocalTable, tfields) -- as Data FROM #ifs_tables
SELECT * FROM #tempFieldsCheck

Try this
DECLARE @DemoTable table
localtable char(100),
fields varchar(200)
INSERT INTO @DemoTable values('customertable','fname,lname')
INSERT INTO @DemoTable values('accounttable','type,accountnumber')
select * from @DemoTable
SELECT A.localtable ,
Split.a.value('.', 'VARCHAR(100)') AS Dept
FROM (SELECT localtable,
CAST ('<M>' + REPLACE(fields, ',', '</M><M>') + '</M>' AS XML) AS String
FROM @DemoTable) AS A CROSS APPLY String.nodes ('/M') AS Split(a);
Refer:-https://sqlpowershell.wordpress.com/2015/01/09/sql-split-delimited-columns-using-xml-or-udf-function/
CREATE FUNCTION ParseValues
(@String varchar(8000), @Delimiter varchar(10) )
RETURNS @RESULTS TABLE (ID int identity(1,1), Val varchar(8000))
AS
BEGIN
DECLARE @Value varchar(100)
WHILE @String is not null
BEGIN
SELECT @Value=CASE WHEN PATINDEX('%'+@Delimiter+'%',@String) >0 THEN LEFT(@String,PATINDEX('%'+@Delimiter+'%',@String)-1) ELSE @String END, @String=CASE WHEN PATINDEX('%'+@Delimiter+'%',@String) >0 THEN SUBSTRING(@String,PATINDEX('%'+@Delimiter+'%',@String)+LEN(@Delimiter),LEN(@String)) ELSE NULL END
INSERT INTO @RESULTS (Val)
SELECT @Value
END
RETURN
END
SELECT localtable ,f.Val
FROM @DemoTable t
CROSS APPLY dbo.ParseValues(t.fields,',')f
--Prashanth

Hacking application id equals() to allow more than one row per "primary key"

I have a read only entity whose primary key is not the real primary key
on the underlying table. The result is that I get more than one row per
"primary key". This is what I want. However KODO will not allow me do
it, because I am storing the collection in a HashSet() and the equals()
method on the application id object ensures that this set contains no
duplicates (as defined by the application id). At least thats how it
seems to behave.
So, I have hacked the equals() method to do this:
public boolean equals (Object ob)
if (this == ob)
return true;
// Doing this because we expect more than one row from
// REF_CODES for the same domain/shortCode combination.
// This is ok to do (I guess?) as long as we are only
// doing selects using this class.
return false;
Will this hack have any side effects? Is there another option? Like
using a list collection? Is so, which collections are supported?
Thanks,
Mike.

The "primary key" I am using it already a compound key of two columns.
The real key on the underlying table is a three column key. But the
problem is that the table represents two different application level
entities. I could deal with it when I was hand-writing SQL (I could do
a distinct for example) but now I am relying on foreign key
relationships since I moved to JDO. Not sure what to do. Best solution
is to rework the table, but there is a lot of legacy code (that other
teams use and maintain) relying on this table. I guess I'll use the
weekend for inspiration ;-)
Steve Kim wrote:
This sounds like a dangerous operation. Even if this works now, I
cannot promise future compatibility... and in fact may result in bad
data (for example in caching both at the PM and PMF level) Is there no
other field that you can reference as part of the primary key? Primary
Keys can be multi columned (e.g. last_name, soc_sec_number)
Mike Hogan wrote:
I have a read only entity whose primary key is not the real primary
key on the underlying table. The result is that I get more than one
row per "primary key". This is what I want. However KODO will not
allow me do it, because I am storing the collection in a HashSet() and
the equals() method on the application id object ensures that this set
contains no duplicates (as defined by the application id). At least
thats how it seems to behave.
So, I have hacked the equals() method to do this:
public boolean equals (Object ob)
if (this == ob)
return true;
// Doing this because we expect more than one row from
// REF_CODES for the same domain/shortCode combination.
// This is ok to do (I guess?) as long as we are only
// doing selects using this class.
return false;
Will this hack have any side effects? Is there another option? Like
using a list collection? Is so, which collections are supported?
Thanks,
Mike.

OCI - Array-Fetch vs. One-row-per-fetch

Hello guys,
i have a question about the OCI and the possibilities about fetches.
Is it possible to get only one row per fetch without setting the array size to 1?
I have a third party application that shows this behaviour which i have rebuild in sqlplus.
SQL> create table mytest (a number);
SQL> begin
2 for i in 1 .. 1500 loop
3 insert into mytest values (i);
4      end loop;
5 end;
6 /
PL/SQL procedure successfully completed.
SQL> commit;
Commit complete.
SQL> set autotrace traceonly;
-- Now with the default array size of 15 with sqlplus
SQL> select * from mytest;
     118 consistent gets
     101 SQL*Net roundtrips to/from client
     1500 rows processed
-- Now with a bigger array size (150)
SQL> set arraysize 150
SQL> select * from mytest;
     17 consistent gets
     11 SQL*Net roundtrips to/from client
     1500 rows processed
-- Now the behaviour of the third party application
SQL> set arraysize 1
SQL> select * from mytest;
     757 consistent gets
     751 SQL*Net roundtrips to/from client
     1500 rows processed
SQL> set arraysize 2
SQL> select * from mytest;
     757 consistent gets
     751 SQL*Net roundtrips to/from client
     1500 rows processedThe third party application is a c program and i can not take a look at the code.
So as you can see the consistent gets are the same with arraysize 1 and 2. The sql statement which is executed of the c-program is returning a huge amount of data and it seems like it is run with arraysize 1 or 2 or it is executing a different OCI call.
So now is my question:
Which methods does the OCI interface provide to recieve (fetch) data?
- Is it only array fetching (like sqlplus do) or is it possible to return only one row per fetch with a specific call.
I can speed up the query by setting the bigger array-size in sqlplus .. but i want to point the programers to the possibilities with the OCI.
Thanks and Regards
Stefan

The following call in OCI can be used to control the fetched rows
MAX_PREFETCH_ROWS is number of rows you want to fetch in one round trip.
(void) OCIAttrSet((dvoid *)DBctx->stmthp, (ub4) OCI_HTYPE_STMT,
(dvoid *)&MAX_PREFETCH_ROWS,(ub4)sizeof(MAX_PREFETCH_ROWS),(ub4) OCI_ATTR_PREFETCH_ROWS, DBctx->errhp);

How to pivot horizontally Author names, and group by Book title. One row per book with multiple authors

I have 3 tables - Book, Author, BookAuthorReference
A book can have multiple authors, and when I do straight query I get multiple rows per book
SELECT <columns>
FROM Book b, Author a, BookAuthorReference ba
where ba.BookId = b.BookId and
ba.AuthorId = a.AuthorId
I want to get the results as ONE row per book, and Authors separated by commas, like:
SQL 2008 internals book    Paul Randal, Kimberly Tripp, Jonathan K, Joe Sack...something like this
Thank you in advance

This can by done by straying into XML land. The syntax is anything but intuitive, but it works. And moreover, it is guaranteed to work.
SELECT b.Title, substring(a.Authors, 1, len(a.Authors) - 1) AS Authors
FROM   Books b
CROSS APPLY (SELECT a.Author + ','
FROM   BookAuthorReference ba
JOIN   Authors a ON a.AuthorID = ba.AuthorID
WHERE ba.BookID = a.BookID
ORDER BY ba.AuthorNo
FOR XML PATH('')) AS a(Authors)
Erland Sommarskog, SQL Server MVP, [email protected]

SQL Report - PDF Report Printing. How to show one row per page?

Hello
I have successfully created a simple SQL Report.
Than I enabled Report Printing to PDF (default Report Layout).
Export to PDF is working good by default.
Now I want to see one report row per one PDF page. Is it possible?
How I can change the amount of rows per PDF page using default report layout?
I tried to create a User Layout with MSWord Plugin. it's quite suitable for data forms.
But I still did not find a way around for my question.

I would create an User Layout (.rtf) with MSWord. Load your XML data and use the table wizzard to put the fields in your document.
Put this code after your last field and before the 'E' (= <?end for-each?> tag):
<?split-by-page-break:?>

Can an Excel Report with Multivalue Custom field list report on one row per task

I have a ECF Multi Value field (MVF) at the Task Level and have created a report. In Excel it wants to add it as a Pivotable, which makes sense and I end up with a row for each MVF. If a Task has 3 MV selected there are 3 rows returned.
I want to see if it will return only one row (row per task).
Example of Result Required
PTask name , MVf Value1, MVF Value2, MVF Value 3.
Build Car             X
X
Build Bike            X                     X
Is it possible? is there something in my SQL Query I can do or is there something in Excel I can configure?
Result being Returned
PTask name , MVf Value1, MVF Value2, MVF Value 3.
Build Car             X
Build Car                                                    X
Build Bike            X
Build Bike                                 X
SQL Query
SELECT
MSP_EpmProject_UserView.ProjectOwnerName,
MSP_EpmProject_UserView.ProjectName,
MSP_EpmTask_UserView.TaskName,
MSP_EpmLookupTable.MemberFullValue AS [Item],
Iif(MSP_EpmLookupTable.MemberFullValue LIKE
'%' + 'CPT' + '%','X','') AS [CPT],
Iif(MSP_EpmLookupTable.MemberFullValue LIKE
'%' + 'TS' + '%','X','') AS [TS],
Iif(MSP_EpmLookupTable.MemberFullValue LIKE
'%' + 'CSAs' + '%','X','') AS [CSAs],
Iif(MSP_EpmLookupTable.MemberFullValue LIKE
'%' + 'EM' + '%','X','') AS [EM],
Iif(MSP_EpmLookupTable.MemberFullValue LIKE
'%' + 'RS' + '%','X','') AS [RS],
Iif(MSP_EpmLookupTable.MemberFullValue LIKE
'%' + 'IS' + '%','X','') AS [IS]
FROM
MSP_EpmProject_UserView INNER JOIN
MSP_EpmTask_UserView ON
MSP_EpmProject_UserView.ProjectUID = MSP_EpmTask_UserView.ProjectUID
LEFT OUTER JOIN
[MSPCFTASK_Service Areas_AssociationView] ON
MSP_EpmTask_UserView.TaskUID = [MSPCFTASK_Service Areas_AssociationView].EntityUID
LEFT OUTER JOIN
MSP_EpmLookupTable ON
[MSPCFTASK_Service Areas_AssociationView].LookupMemberUID = MSP_EpmLookupTable.MemberUID
WHERE datalength(MSP_EpmLookupTable.MemberFullValue) > 0
Andrew Payze

Hi Andrew,
I'm not a developer, but I found something in my documentation that could help you. This is a SQL store procedure that returns in an Excel pivot table something like below (GR_test6 being a project and values in the next column being multivalue project ECF
values).
SELECT proj.ProjectName,
lt.MemberFullValue AS 'VLookupField'
FROM dbo.MSP_EpmProject_UserView AS proj
LEFT OUTER JOIN [dbo].[MSPCFPRJ_ProjectECF_AssociationView] AS MVassoc -- view for multi value field
ON proj.ProjectUID = MVassoc.EntityUID
LEFT OUTER JOIN dbo.MSP_EpmLookupTable AS lt
ON MVassoc.LookupMemberUID = lt.MemberUID
order by ProjectName asc
Hope this helps.
Guillaume Rouyre - MBA, MCP, MCTS

Returning one row per group

I apologize if this is a duplicate of some other post, but I'm not finding this exact scenario.
Assume that I have a table that looks like this:
select * from PROD_TABLE
PROD DESCRIPTION
1234 CANDLES
1234 CANDLE
1235 BRAKE PADS
1235 BRAKE PAD
(Yes, I know, I know, but it's for a POC, so dirty data will be cleaned up later.)
What I'd like to do is create a select statement that returns two rows from this table, one row for Prod 1234, one row for Prod 1235, and I DON'T CARE which description is returned for the corresponding Prod. For the POC, it's just not important which one is returned.
How can I craft the select statement?

try this
SQL> with t as (select 1234 prod, 'CANDLES' dec from dual union all
2 select 1234 ,'CANDLE' dec from dual union all
3 select 1235 ,'BRAKE PADS' dec from dual union all
4 select 1235 ,'BRAKE PAD' dec from dual)
5 SELECT prod, DEC
6    FROM ( SELECT a.*
7                , ROW_NUMBER ( ) OVER ( PARTITION BY prod ORDER BY prod ) rn
8            FROM t a )
9   WHERE rn = 1
10 /
      PROD DEC
      1234 CANDLES
      1235 BRAKE PADS
SQL>

Function returning more than one row in type

SQL> create or replace package types
2 as
3 type cursorType is ref cursor;
4 end;
5 /
Package created.
SQL> create or replace function sp_ListEmp return types.cursortype
2 as
3 l_cursor types.cursorType;
4 begin
5 open l_cursor for select rowid from emp;
6 return l_cursor;
7* end;
8 /
Function created.
SQL> select sp_listEmp from dual;
SP_LISTEMP
CURSOR STATEMENT : 1
CURSOR STATEMENT : 1
ROWID
AAAHW7AABAAAMUiAAB
AAAHW7AABAAAMUiAAC
AAAHW7AABAAAMUiAAD
AAAHW7AABAAAMUiAAE
AAAHW7AABAAAMUiAAF
AAAHW7AABAAAMUiAAG
AAAHW7AABAAAMUiAAH
AAAHW7AABAAAMUiAAI
AAAHW7AABAAAMUiAAJ
when i execute select * from emp where rowid in(select sp_listEmp from dual);
I am not getting output Please help me
Message was edited by:
Oracle_Friend

Pipelined function can help you :
SCOTT@demo102> ed
Wrote file afiedt.buf
1* create or replace type EmpRowid as table of varchar2(64);
SCOTT@demo102> /
Type created.
SCOTT@demo102> ed
Wrote file afiedt.buf
1 create or replace function emp_rowid
2    RETURN EmpRowid
3    PIPELINED
4 IS
5 BEGIN
6    FOR x IN (select rowid from emp)
7    LOOP
8      PIPE ROW( x.rowid );
9    END LOOP;
10    RETURN;
11* END;
SCOTT@demo102> /
Function created.
SCOTT@demo102> select * from table( emp_rowid );
COLUMN_VALUE
AAAMfPAAEAAAAAgAAA
AAAMfPAAEAAAAAgAAB
AAAMfPAAEAAAAAgAAC
AAAMfPAAEAAAAAgAAD
AAAMfPAAEAAAAAgAAE
AAAMfPAAEAAAAAgAAF
AAAMfPAAEAAAAAgAAG
AAAMfPAAEAAAAAgAAH
AAAMfPAAEAAAAAgAAI
AAAMfPAAEAAAAAgAAJ
AAAMfPAAEAAAAAgAAK
AAAMfPAAEAAAAAgAAL
AAAMfPAAEAAAAAgAAM
AAAMfPAAEAAAAAgAAN
14 rows selected.
SCOTT@demo102> select *
2 from emp
3 where rowid in (select column_value from table( emp_rowid ));
     EMPNO ENAME      JOB              MGR HIREDATE        SAL       COMM
    DEPTNO
      7369 SMITH      CLERK           7902 17/12/80       8000
        20
      7499 ALLEN      SALESMAN        7698 20/02/81      16000        300
        30
      7521 WARD       SALESMAN        7698 22/02/81      12500        500
        30
     EMPNO ENAME      JOB              MGR HIREDATE        SAL       COMM
    DEPTNO
      7566 JONES      MANAGER         7839 02/04/81      29750
        20
      7654 MARTIN     SALESMAN        7698 28/09/81      12500       1400
        30
      7698 BLAKE      MANAGER         7839 01/05/81      28500
        30
     EMPNO ENAME      JOB              MGR HIREDATE        SAL       COMM
    DEPTNO
      7782 CLARK      MANAGER         7839 09/06/81      24500
        10
      7788 SCOTT      ANALYST         7566 19/04/87      30000
        20
      7839 KING       PRESIDENT            17/11/81      50000
        10
     EMPNO ENAME      JOB              MGR HIREDATE        SAL       COMM
    DEPTNO
      7844 TURNER     SALESMAN        7698 08/09/81      15000          0
        30
      7876 ADAMS      CLERK           7788 23/05/87      11000
        20
      7900 JAMES      CLERK           7698 03/12/81       9500
        30
     EMPNO ENAME      JOB              MGR HIREDATE        SAL       COMM
    DEPTNO
      7902 FORD       ANALYST         7566 03/12/81      30000
        20
      7934 MILLER     CLERK           7782 23/01/82      13000
        10
14 rows selected.
SCOTT@demo102> You can add parameters to the function for restrict the result.
Nicolas.

Query to display one row per group based on highest value

I have the following table and I want to be able to create a query that displays only the highest number based on a group. (see below)
Acode
aname
anumber
a
Jim
40
a
Jim
23
a
Jim
12
b
Sal
42
b
Sal
12
b
Sal
3
Acode
aname
anumber
a
Jim
40
b
Sal
42

Multiple ways
using aggregation
SELECT Acode,aname,MAX(anumber) AS anumber
FROM table
GROUP BY Acode,aname
using subquery
SELECT Acode,aname,anumber
FROM table t
WHERE NOT EXISTS (
SELECT 1
FROM table
WHERE Acode = t.Acode
AND aname = t.aname
AND anumber > t.anumber
using analytical function
SELECT Acode,aname,anumber
FROM
SELECT *,ROW_NUMBER() OVER (PARTITION BY Acode, aname ORDER BY anumber DESC) AS Rn
FROM table
)t
WHERE Rn = 1
Please Mark This As Answer if it solved your issue
Please Vote This As Helpful if it helps to solve your issue
Visakh
My Wiki User Page
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How just return one row of a one to many join..

So I have a one to many join where the SMOPERATOR table has data I need however it has a couple of rows that match the JOIN condition in there. I just need to return one row. I think this can be accomplished with a subquery in the join however have not been able to come up with the right syntax to do so.
So:
SELECT "NUMBER" as danumber,
NAME,
SMINCREQ.ASSIGNMENT,
SMOPERATOR.PRIMARY_ASSIGNMENT_GROUP,
SMOPERATOR.WDMANAGERNAME,
SMINCREQ.owner_manager_name,
SMINCREQ.subcategory, TO_DATE('01-'||TO_CHAR(open_time,'MM-YYYY'),'DD-MM-YYYY')MONTHSORT,
(CASE WHEN bc_request='f' THEN 'IAIO'
WHEN (bc_request='t' and substr(assignment,1,3)<>'MTS') THEN 'RARO'
WHEN (bc_request='t' and substr(assignment,1,3)='MTS') THEN 'M'
ELSE 'U' end) as type
from SMINCREQ
left outer join SMOPERATOR on SMINCREQ.assignment=SMOPERATOR.primary_assignment_group
WHERE SMINCREQ.owner_manager_name=:P170_SELECTION and SMOPERATOR.wdmanagername=:P170_SELECTION
AND open_time BETWEEN to_date(:P170_SDATEB,'DD-MON-YYYY') AND to_date(:P170_EDATEB,'DD-MON-YYYY')
AND
(bc_request='f' and subcategory='ACTIVATION' and related_record<>'t')
OR
(bc_request='f' and subcategory<>'ACTIVATION')
OR
(bc_request='t' and substr(assignment,1,3)<>'MTS')
order by OPEN_TIMe

Hi,
This sounds like a Top-N Query , where you pick N items (N=1 in this case) off the top of an orderded list. I think you want a separate ordered list for each assignment; the analytic ROW_NUMBER function does that easily.
Since you didn't post CREATE TABLE and INSERT statements for your sample data, I'll use tables from the scott schema to show how this is done.
Say you have a query like this:
SELECT       d.dname
,       e.empno, e.ename, e.job, e.sal
FROM       scott.dept d
JOIN       scott.emp   e ON   d.deptno = e.deptno
ORDER BY dname
;which produces this output:
DNAME               EMPNO ENAME      JOB              SAL
ACCOUNTING           7934 MILLER     CLERK           1300
ACCOUNTING           7839 KING       PRESIDENT       5000
ACCOUNTING           7782 CLARK      MANAGER         2450
RESEARCH             7876 ADAMS      CLERK           1100
RESEARCH             7902 FORD       ANALYST         3000
RESEARCH             7566 JONES      MANAGER         2975
RESEARCH             7369 SMITH      CLERK            800
RESEARCH             7788 SCOTT      ANALYST         3000
SALES                7521 WARD       SALESMAN        1250
SALES                7844 TURNER     SALESMAN        1500
SALES                7499 ALLEN      SALESMAN        1600
SALES                7900 JAMES      CLERK            950
SALES                7698 BLAKE      MANAGER         2850
SALES                7654 MARTIN     SALESMAN        1250Now say you want to change the query so that it only returns one row per department, like this:
DNAME               EMPNO ENAME      JOB              SAL
ACCOUNTING           7782 CLARK      MANAGER         2450
RESEARCH             7876 ADAMS      CLERK           1100
SALES                7499 ALLEN      SALESMAN        1600where the empno, ename, job and sal columns on each row of output are all taken from the same row of scott.emp, though it doesn't really matter which row that is.
One way to do it is to use the analytic ROW_NUMBER function to assign a sequence of unique numbers (1, 2, 3, ...) to all the rows in each department. Since each sequence startw with 1, and the numbers are unique within a department, there will be exactly one row per departement that was assigned the numebr 1, and we''ll display that row.
Here's how to code that:
WITH     got_r_num     AS
     SELECT     d.dname
     ,     e.empno, e.ename, e.job, e.sal
     ,     ROW_NUMBER () OVER ( PARTITION BY d.dname
                               ORDER BY         e.ename
                       )         AS r_num
     FROM     scott.dept d
     JOIN     scott.emp   e ON   d.deptno = e.deptno
SELECT       dname
,       empno, ename, job, sal
FROM       got_r_num
WHERE       r_num     = 1
ORDER BY dname
;Notice that he sub-query got_r_num is almost the same as the original query; only it has one additional column, r_num, in the SELECT clause, and the sub-qeury does not have an ORDER BY clause. (Sub-queries almost never have an ORDER BY clause.)
The ROW_NUMBER function must have an ORDER BY clause. In this example, I used "ORDER BY ename", meaning that, within each department, the row with the first ename (in sort order) will get r_num=1. You can use any column, or expression, or expressions in the ORDER BY clause. You muight as well use something consistent and predictable, like ename, but if you really wanted arbitrary numbering you could use a constant in the analytic ORDER BY clause, e.g. "ORDER BY NULL".

Concatenate strings from more rows into one row.

Hi,
what's the name of that analytical function (or connect by) that
would return strings from more rows as one row concatenated. i.e.:
(I know this is possible using regular pipelined functions.)
ROW1:   STR1
ROW2:   STR2
ROW3:   STR3
select tadah().... from ...
result:
ROW1: STR1 STR2 STR3Thanks.

Hi,
Here's a basic example of SYS_CONNECT_BY_PATH.
The query below produces one row of output per department, containing a list of the employees in that department, in alphabetioc order.
WITH     got_rnum     AS
     SELECT     ename
     ,     deptno
     ,     ROW_NUMBER () OVER ( PARTITION BY deptno
                                     ORDER BY         ename
                          ) AS rnum
     FROM     scott.emp
--     WHERE     ...          -- Any filtering goes here
SELECT     deptno
,     LTRIM ( SYS_CONNECT_BY_PATH ( ename
                              , ','     -- Delimiter, must never occur in ename
           )          AS ename_list
FROM     got_rnum
WHERE     CONNECT_BY_ISLEAF     = 1
START WITH     rnum          = 1
CONNECT BY     rnum          = PRIOR rnum + 1
     AND     deptno          = PRIOR deptno
;Output:
.   DEPTNO ENAME_LIST
        10 CLARK,KING,MILLER
        20 ADAMS,FORD,JONES,SCOTT,SMITH
        30 ALLEN,BLAKE,JAMES,MARTIN,TURNER,WARDThe basic CONNECT BY query would produce one row per employee, for example:
.   DEPTNO ENAME_LIST
        10 ,CLARK
        10 ,CLARK,KING
        10 ,CLARK,KING,MILLER
        20 ,ADAMS
        20 ,ADAMS,FORD
...The WHERE clause: <tt>WHERE CONNECT_BY_ISLEAF = 1</tt> means that we'll only see the last row for every department.
SYS_CONNECT_BY_PATH (which is a row function, by the way, not an analytic fucntion) puts a delimiter (',' in the example above) before every item on the list, including the first one.
The query above uses LTRIM to remove the delimiter at the very beginning.
WM_COMCAT (or the equivalent user-defined STRAGG, which you can copy from AskTom) is much more convenient if order is not important.

SQL query - select one row from each date group

Hi,
I have data as follows.
Visit_Date Visit_type Consultant
05/09/2009 G name1
05/09/2009 G name2
05/09/2009 G name3
06/09/2009 I name4
07/09/2009 G name5
07/09/2009 G name6
How to select data as follows
05/09/2009 G name1
06/09/2009 G name4
07/09/2009 G name5
i.e one row from every visit_date
Thanks,
MK Nathan
Edited by: k_murali on Oct 7, 2009 10:44 PM

Are you after this (one row per date per visit_type)
with dd as (select to_date('05/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name1' Consultant from dual
            union all
            select to_date('05/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name2' Consultant from dual
            union all
            select to_date('05/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name3' Consultant from dual
            union all
            select to_date('06/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name4' Consultant from dual
            union all
            select to_date('07/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name5' Consultant from dual
            union all
            select to_date('07/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name6' Consultant from dual
            union all
            select to_date('07/09/2009','MM/DD/YYYY') Visit_Date, 'F' Visit_type, 'name7' Consultant from dual)
select trunc(visit_date) visit_date, visit_type, min(consultant)
from   dd
group by trunc(visit_date), visit_type
order by trunc(visit_date);
VISIT_DAT V MIN(C
09/MAY/09 G name1
09/JUN/09 G name4
09/JUL/09 G name5
09/JUL/09 F name7or are you after only one row per date?:
with dd as (select to_date('05/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name1' Consultant from dual
            union all
            select to_date('05/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name2' Consultant from dual
            union all
            select to_date('05/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name3' Consultant from dual
            union all
            select to_date('06/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name4' Consultant from dual
            union all
            select to_date('07/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name5' Consultant from dual
            union all
            select to_date('07/09/2009','MM/DD/YYYY') Visit_Date, 'G' Visit_type, 'name6' Consultant from dual
            union all
            select to_date('07/09/2009','MM/DD/YYYY') Visit_Date, 'F' Visit_type, 'name7' Consultant from dual)
select trunc(visit_date) visit_date, min(visit_type) visit_type, min(consultant)
from   dd
group by trunc(visit_date)
order by trunc(visit_date);
VISIT_DAT V MIN(C
09/MAY/09 G name1
09/JUN/09 G name4
09/JUL/09 F name5

Looping over multiple rows of data to output one row

My query is giving me the appropriate data, but I need to
only have one row per 'MANAGER' in my output - not one for each
'JOB'. Now the output looks like this:
manager 1 ... period 1 $ .... period 2 $ .... period 3 $
manager 1... period 1 $ .... period 2 $ .... period 3 $
manager 1... period 1 $ .... period 2 $ .... period 3 $
manager 1... period 1 $ .... period 2 $ .... period 3 $
manager 2... period 1 $ .... period 2 $ .... period 3 $
manager 2... period 1 $ .... period 2 $ .... period 3 $
manager 2... period 1 $ .... period 2 $ .... period 3 $
manager 2... period 1 $ .... period 2 $ .... period 3 $
It needs to be:
Manager 1 ... total period 1 $ .... total period 2 $ ....
Manager 2 ... total period 1 $ .... total period 2 $ ....
Any help would be wonderful. I am really new at something
this complex. Thanks!!!

To fix your immediate issue, you need to order and group by
manager, not MPR_ID (whatever that is).
What is dm_id? Use descriptive names!
Anyway, change the ORDER BY clause to:
ORDER BY
RR.LastName+', '+RR.FirstName, 
AA.MPR_ID
Then change the first <cfoutput> to:
<cfoutput query="production" group="Rep_name">

If I add artwork by dragging a jpg to the artwork area after selecting several rows, in some instances a single icon is created in the flipper; in others one is created for each song. Why? How can I get one image per album every time?

If I add artwork by dragging a jpg to the artwork area after selecting several rows, in some instances a single icon is created in the flipper; in others one is created for each song. Why? How can I get one image per album every time?

If I add artwork by dragging a jpg to the artwork area after selecting several rows, in some instances a single icon is created in the flipper; in others one is created for each song. Why? How can I get one image per album every time?

ONE ROW PER TYPE

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