What is recursive join in sql?

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what is the difference between clustered and non clustered index in sql? : Sql dba

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Which command is used to call a stored procedure?

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Why join is faster than subquery?

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Is left join faster than inner join?

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What are Lexical Parameters.How They are used in Reports 6i

2 Answers   eicc,

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Is sql the best database?

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can we delete the trigger in a view? if yes why if not why?

5 Answers   Tech Mahindra,

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What will happen after commit statement ?

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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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Why is sharding used?

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Can we rollback truncate?

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