What is the least restrictive isolation level? : Transact sql

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What are views in sql?

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suppose u hav 1 book with set...page 1-100 n 101 -200 now print page from 2-100 n 102 -200... how we will do..?

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How to Execute a Package in PL/SQL.?

0 Answers   MCN Solutions,

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Explain the difference between cursor declared in procedures and cursors declared in the package specification?

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What is the difference between the implicit and explicit cursors?

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How to find 3rd highest salary of an employee from the employee table in sql?

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What are instead of triggers?

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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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What are keys in sql?

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Which is faster count (*) or count 1?

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Can we use out parameter in function?

4 Answers   Infosys,

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