what are the different tables present in mysql, which type of table is generated when we are creating a table in the following syntax: create table employee (eno int(2),ename varchar(10)) ? : Sql dba

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What are different sql data types?

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What is sql constant?

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What is replication id?

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How do I copy a table in sql?

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What is data abstraction in sql?

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What are its different types of dbms?

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A table has 150 records. How do you retrieve 100th row to 120th row from that table ?

21 Answers   IBM,

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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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Show code of a cursor for loop.

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What is t-sql? : Transact sql

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What is cursor and its types?

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