Please Help in query

Question

SELECT PEE2.ASSIGNMENT_ID,--,PEEV2.EFFECTIVE_START_DATE,
PET.ELEMENT_NAME,NVL(MAX(PEEV2.SCREEN_ENTRY_VALUE),0)SALARY
--PEE2.EFFECTIVE_START_DATE PEE_START
FROM PAY_ELEMENT_ENTRIES_F PEE2,PAY_ELEMENT_ENTRY_VALUES_F PEEV2 , PAY_ELEMENT_TYPES_F PET
WHERE PEE2.ELEMENT_TYPE_ID = PET.ELEMENT_TYPE_ID
AND PEE2.ELEMENT_ENTRY_ID=PEEV2.ELEMENT_ENTRY_ID
AND PET.ELEMENT_NAME IN('BASIC_SALARY','AL_CONVEYANCE','AL_TEA','AL_COLA')
AND PEEV2.SCREEN_ENTRY_VALUE IS NOT NULL
AND (PEE2.ASSIGNMENT_ID,PEEV2.EFFECTIVE_START_DATE)=(
SELECT PEE.ASSIGNMENT_ID,MAX(PEEV.EFFECTIVE_START_DATE)
FROM PAY_ELEMENT_ENTRIES_F PEE,PAY_ELEMENT_ENTRY_VALUES_F PEEV
WHERE PEE.ELEMENT_ENTRY_ID=PEEV.ELEMENT_ENTRY_ID
AND PEE.ASSIGNMENT_ID=:ASSIGNMENT_ID
AND PEE.ELEMENT_TYPE_ID = PET.ELEMENT_TYPE_ID
AND PET.ELEMENT_NAME IN('BASIC_SALARY','AL_CONVEYANCE','AL_TEA','AL_COLA')
AND PEEV.SCREEN_ENTRY_VALUE IS NOT NULL
GROUP BY PEE.ASSIGNMENT_ID
)GROUP BY ASSIGNMENT_ID , PET.ELEMENT_TYPE_ID , PET.ELEMENT_NAME
output is
ASSIGNMENT_ID     ELEMENT_NAME     SALARY
117     AL_COLA     650
117     AL_CONVEYANCE     1180
117     AL_TEA     172
117     BASIC_SALARY     7820
but i want the output like this
ASSIGNMENT_ID ------AL_COLA------AL_CONVEYANCE------AL_TEA-------BASIC_SALARY
117---------------------------650-------------------1180----------------------172-----------7820
PLZZ HELP NO HARDCODE PLZZ ONLY DYNAMIC QUERY REQUIRED AND NO PL/SQL USED..
REGARDS
RANCHOO

Answer 1

Hi,
Since you didn't post any tables, I'll use the scott.emp table to show you how to get results like that.
Let's say we're interested in this data:
SELECT       deptno
,       job
,       sal
FROM       scott.emp
ORDER BY  deptno
,     job
    DEPTNO JOB              SAL
        10 CLERK           1300
        10 MANAGER         2450
        10 PRESIDENT       5000
        20 ANALYST         3000
        20 ANALYST         3000
        20 CLERK           1100
        20 CLERK            800
        20 MANAGER         2975
        30 CLERK            950
        30 MANAGER         2850
        30 SALESMAN        1250
        30 SALESMAN        1250
        30 SALESMAN        1600
        30 SALESMAN        1500Let's say we want to get a total sal for each deptno and job, aned present it as a cross-tab, with a row for every deptno and a column for every job. As Karthick pointed out, that requires dynamic SQL, so let's just take the first 4 jobs in alphabetic order. The query below numbers the jobs 1, 2, 3, ... in alphabetic order, then uses that number to consider only a certain job in each column.
WITH     got_jnum    AS
     SELECT       deptno
     ,       job
     ,       sal
     ,       DENSE_RANK () OVER (ORDER BY job)     AS jnum
     FROM       scott.emp
SELECT       deptno
,       TO_CHAR (SUM (CASE WHEN jnum = 1 THEN sal END), '99999999')     AS job_1
,       TO_CHAR (SUM (CASE WHEN jnum = 2 THEN sal END), '99999999')     AS job_2
,       TO_CHAR (SUM (CASE WHEN jnum = 3 THEN sal END), '99999999')     AS job_3
,       TO_CHAR (SUM (CASE WHEN jnum = 4 THEN sal END), '99999999')     AS job_4
FROM       got_jnum
GROUP BY  deptno
    UNION ALL
SELECT       NULL                                   AS deptno
,       MIN (CASE WHEN jnum = 1 THEN LPAD (job, 9) END)     AS job_1
,       MIN (CASE WHEN jnum = 2 THEN LPAD (job, 9) END)     AS job_2
,       MIN (CASE WHEN jnum = 3 THEN LPAD (job, 9) END)     AS job_3
,       MIN (CASE WHEN jnum = 4 THEN LPAD (job, 9) END)     AS job_4
FROM       got_jnum
ORDER BY  deptno     NULLS FIRST
    DEPTNO JOB_1     JOB_2     JOB_3     JOB_4
             ANALYST     CLERK   MANAGER PRESIDENT
        10                1300      2450      5000
        20      6000      1900      2975
        30                 950      2850A lot of the complexity in the query above involves getting the row with the actual job names. If you knew what they were, you could hard-colde them into the query; then you woldn't need the second part of the UNION, and therefore you wouldn't need TO_CHAR.
This is called a Pivot . Search for "Pivot" (or, as Karthick suggested "Rows to Columns") to see more examples and explanations.
If you really want a variable number of columns, then you need dynamic SQL, as Karthick explained. This isn't very hard, as dynamic SQL goes. You just need to have a preliminary query determine what the jobs are, and write an appropriate SUM expression (with column alias) to use in the SELECT clause. See [this thread|http://forums.oracle.com/forums/message.jspa?messageID=3227306] for an example.
Another way to get a variable number of jobs is to use String Aggregation , where all the data about all the jobs is combined in one giant string column. That huge string can be formatted so that it looks like separate columns. [This site|http://www.oracle-base.com/articles/10g/StringAggregationTechniques.php] has a good summary of different String Aggregation techniques.