What is localdb mssqllocaldb?

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Can you load data into multiple tables at once? : aql loader

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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 the use of primary key?

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In pl/sql, what is bulk binding, and when/how would it help performance?

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Explain two virtual tables available at the time of database trigger execution.

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What is Difference Between Unique and Primary Key Constraints?

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What are the built in functions of sql?

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What are sql functions? Describe in brief different types of sql functions?

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Why schema is used in sql?

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What is gpt format?

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What is the difference between alter trigger and drop trigger statements?

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