Answer / babloo

In a table the following data types are allowed :

1)varchar2()
2)date
3)long
4)integer
5)number

Answer / madhavi

1)varchar2()
2)date
3)TIMESTAMP[(precision)] default precision is 6 we can
mention from 0...9
4)long
5)integer
6)number
7)char
8)clob
9)raw()
10)pls_integer
11)binary_integer
12)nvarchar2()
13)bfile

Answer / satheesh

1.Number
2.Varchar2
3.Date

Explain dml and ddl?

0 Answers  

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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.

4 Answers  

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What is compiled query?

0 Answers  

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Can a procedure in a package be overloaded?

0 Answers   EXL,

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What are pl/sql packages?

0 Answers  

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What are procedures used for?

0 Answers  

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What is the usage of when clause in trigger?

0 Answers  

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What is informix sql?

0 Answers  

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What is using in sql?

0 Answers  

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Write a sql to print only character form the below string. @So&*CIE%$TE@GEN!@RAL

1 Answers   Societe Generale,

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check whether all the emp numbers are indeed unique.

6 Answers  

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Any attempt to navigate programmatically to disabled form in a call_form stack is allowed?

0 Answers  

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