How to get this query???

hi,
1).i want to know how to suppress duplicate rows in table.
2).i want to know how to delete last two rows in table.
help me
thanks in advance.
sai.

Ans1) You can use RowId for that like if we have table like:
Table name : Emp
Column Name
1) Code
2) Name
Then we can suppress duplicate records by following Command:
Delete from Emp
where rowid not in(select max(rowid) from emp
group by name,code);
I will tell you ans 2 later.
Vidya
<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by [email protected]:
hi,
1).i want to know how to suppress duplicate rows in table.
2).i want to know how to delete last two rows in table.
help me
thanks in advance.
sai.<HR></BLOCKQUOTE>
null

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Help: How to get this query?

I am working one a query and the analogy is like:
TABLE TEST has two columns: order_ID, amount
I'd like to get a query that will show
Amount range ---# of order ---total amount
$0 - $999
$1000 - $4,999
$5,000 - $9,999
$10,000 - $19,999
$20,000 - $49,999
$1,000,000
Please post your suggestions.
Thank you in advance.
Jimmy
Message was edited by: Jimmy
Jimmy

Hi Jimmy,
Here is an example please change the column names according to your example.
SELECT '$0 - $99' as range
     , count(CASE WHEN sal BETWEEN 0 and 1000 THEN sal END) as count
     , sum(CASE WHEN sal BETWEEN 0 and 1000 THEN sal END) total_amount
FROM emp
WHERE case when sal between 0 and 1000 then sal end is not null
UNION ALL
SELECT '$100 - $4999' as range
     , count(CASE WHEN sal BETWEEN 1000 and 4999 THEN sal END) as count
     , sum(CASE WHEN sal BETWEEN 1000 and 4999 THEN sal END) total_amount
FROM emp
WHERE case when sal between 1000 and 4999 then sal end is not null
UNION ALL
SELECT '$5000 - $9999' as range
     , count(CASE WHEN sal BETWEEN 5000 and 9999 THEN sal END) as count
     , sum(CASE WHEN sal BETWEEN 5000 and 9999 THEN sal END) total_amount
FROM emp
WHERE case when sal between 5000 and 9999 then sal end is not null
UNION ALL
SELECT '$10000 - $19999' as range
     , count(CASE WHEN sal BETWEEN 10000 and 19999 THEN sal END) as count
     , sum(CASE WHEN sal BETWEEN 10000 and 19999 THEN sal END) total_amount
FROM emp
WHERE case when sal between 10000 and 19999 then sal end is not null
UNION ALL
SELECT '$20000 - $49999' as range
     , count(CASE WHEN sal BETWEEN 20000 and 49999 THEN sal END) as count
     , sum(CASE WHEN sal BETWEEN 20000 and 49999 THEN sal END) total_amount
FROM emp
WHERE case when sal between 20000 and 49999 then sal end is not null
UNION ALL
SELECT '$50000 - $1000000' as range
     , count(CASE WHEN sal BETWEEN 500000 and 1000000 THEN sal END) as count
     , sum(CASE WHEN sal BETWEEN 500000 and 1000000 THEN sal END) total_amount
FROM emp
WHERE case when sal between 500000 and 1000000 then sal end is not null;HTH
Ghulam

How to get this output using sql query?

Hi,
How to get this output using sql query?
Sno Name Age ADD Result
1 Anil 23 delhi Pass
2 Shruti 25 bangalor Pass
3 Arun 21 delhi fail
4 Sonu 23 pune Pass
5 Roji 26 hydrabad fail
6 Anil 28 delhi pass
Output
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1 Anil 23 delhi pass
28 delhi pass

Hi Vamshi,
Your query is not pretty clear.
write the select query using Name = 'ANIL' in where condition and display the ouput using Control-break statements.
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How to modify this query to get the desired output format

I hv written a Query to display all the parent table names and their primary key columns(relevant to this foreign key of the child table).The query is given below...
SELECT DISTINCT(TABLE_NAME) AS PARENT_TABLE,COLUMN_NAME AS PARENT_COLUMN
FROM ALL_CONS_COLUMNS
WHERE CONSTRAINT_NAME IN (SELECT AC.R_CONSTRAINT_NAME
FROM ALL_CONSTRAINTS AC
WHERE AC.TABLE_NAME=TABLE_NAME
AND AC.TABLE_NAME='&TABLE'
AND AC.R_CONSTRAINT_NAME IS NOT NULL);
This query will display all the parent tables and their primary key columns.Now my problem is that how to modify this query to also display the foreign key column name of the child table.
I want the query result in the following format.The query should display the following columns.1)child table's name,2)child table's foreign key column name,3)the corresponding parent table's name,4)the parent table's primary key column name(which is the foreign key in the child table).
For Example I want the output as follows...
TAKE THE CASE OF SCOTT.EMP(AS INPUT TO YOUR QUERY)
CHILD_TABLE CHILD_COLUMN PARENT_TABLE PARENT_COLUMN
EMP DEPTNO DEPT DEPTNO
In this result I hv used alias name for the columns.The query should display this only for the foreign keys in the child table.In the query which I sent to you earlier will give the parent table and the parent column names,But I also want to append the child table and child column names there.
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Try this query
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     p.table_name parent_table,
     p.column_name parent_column
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How to write this query to filter combination of few values

Hi,
I have a table CHIMM which is a transaction table and contains information of the vaccines given to a child.
columns are: child_id, vacc_id, vacc_given_dt. I have to query for remaining vaccines.
HEXA is a vaccine_id which is composite vaccine of DPT1,POL1,HBV1 & HIB1 (vaccine ids).
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       3
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rha2 wrote:there are alot of vaccines, i just put 3 for example. this query gives error: invalid relational operatorAre you saying that the vacc table contains other rows, but those other rows are not needed for this problem? It would be good if you included an example in the sample data. The query above considers only the rows in vacc where vacc_desc='HEXA'. You can have other rows in the vacc table, but they won't affect the output of this query. The query above makes no assumptions about the number of rows that have vacc_desc='HEXA'; it will report all child_ids who are missing any of them, regardless of the number (assuming the child does not have the 'HEXA' vacc_id itself, like child_id=1).
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How to write this query ?

how to write this query ?
list the emp name who is working for the highest avg sal department.
I can use row_number over to get correct result. If we don't use this row_number function, just plain sql, how to do it ?
the row_number version is like this
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select deptno, row_number() over (order by avg(sal) desc) r from emp
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)e
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and emp.deptno = e.deptno

Hi,
806540 wrote:
how to write this query ?
list the emp name who is working for the highest avg sal department.
I can use row_number over to get correct result. If we don't use this row_number function, just plain sql, how to do it ?ROW_NUMBER is just plain SQL, and has been since Oracle 8.1.
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select deptno, row_number() over (order by avg(sal) desc) r from emp
group by deptno
)e
where e.r = 1
and emp.deptno = e.deptno
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You could use the ROWNUM pseudo-column instead of ROW_NUMBER, if all you want to do is avoid ROW_NUMBER.
Without using ROW_NUMBER or RANK, there are lots of ways involving other analytic functions, such as AVG and MAX.
If you really, really don't want to use analytic functions at all, you can do this:
SELECT     *
FROM     scott.emp
WHERE     deptno     IN (
                  SELECT       deptno
                  FROM       scott.emp
                  GROUP BY deptno
                  HAVING       AVG (sal) = (
                                                   SELECT    MAX (AVG (sal))
                                           FROM          scott.emp
                                           GROUP BY deptno
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