What is difference between stored procedures and application procedures?

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Why is %isopen always false for an implicit cursor?

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explain advantages of myisam over innodb? : Sql dba

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what is the difference between delete and truncate statement in sql? : Sql dba

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Is it possible to use LONG columns in WHERE clause or ORDER BY?

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Does group by remove duplicates?

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What is Overloading of procedures ?

4 Answers   Amdocs,

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What is over () in sql?

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explain about mysql and its features. : Sql dba

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how to concatenate two character strings? : Sql dba

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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 is meant by urlencode and urldocode? : Sql dba

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