Answer / shailesh j

select sum(sales) as Sales_Count,sum(sales_amount) as
T_Sales_Amt,SUM(DECODE(PROD,'A',SALES,0)) as
Sales_Count_A,SUM(DECODE(PROD,'A',SALES_AMOUNT,0))
T_Sales_Amt_A from sales;

Answer / vishalakshi

select
tab1.sales_count,tab1.t_sales_amt ,tab2.sales_count_A,tab2.t
_sales_amt_A
From
(select sum(sales) sales_count,sum(sales_amount)
t_sales_amt from sales)tab1,
(select sum(sales) sales_count_A,sum(sales_amount)
t_sales_amt_A from sales where prod='A' group by prod)tab2

Answer / satish

select sum(prod),
sum(sales_amount),
sum(decode(prod,'A',sales)),
sum(decode(prod,'A',sales_amount))
from sales

Answer / welcomeashwin

SELECT
T1.SALES_COUNT, T1.T_SALES_AMT,
T2.SALES_COUNT_A, T2.T_SALES_AMT_A
FROM
(SELECT SUM(SALES) SALES_COUNT,
SUM(SALES_AMOUNT) T_SALES_AMT
FROM SALES)T1,
(SELECT SUM(SALES) SALES_COUNT_A,
SUM(SALES_AMOUNT) T_SALES_AMT_A
FROM SALES
WHERE PROD='A' GROUP BY PROD)T2

Answer / ravi

select sum(sales) sales_count,sum(sales_amount) t_sales_amount
,(select sum(sales_count) sales_count(A),sum(sales_amount)
t_sales_amt(A) from sales_table group by prod) from sales_table;

i have a word ***********hello********world******. I require a o/p **********hello world**********, Need to delete the middle stars.

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how to check the 3rd max salary from an employee table? One of the queries used is as follows: select sal from emp a where 3=(select count(distinct(sal)) from emp b where a.sal<=b.sal). Here in the sub query "select count(distinct(sal)) from emp b where a.sal<=b.sal" or "select count(distinct(sal)) from emp b where a.sal=b.sal" should reveal the same number of rows is in't it? Can any one here please explain me how is this query working perfectly. However, there is another query to get the 3rd highest of salaries of employees that logic I can understand. Pls find the query below. "select min(salary) from emp where salary in(select distinct top 3 salary from emp order by salary desc)" Please explain me how "select sal from emp a where 3=(select count(distinct(sal)) from emp b where a.sal<=b.sal)" works source:http://www.allinterview.com/showanswers/33264.html. Thanks in advance Regards, Karthik.

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