name 3 ways to get an accurate count of the number of records in a table? : Sql dba

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what does the t-sql command ident_current does? : Transact sql

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find the third highest salary?

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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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Is join and inner join the same?

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What is the difference between SQL table and the PLSQL table?

3 Answers   Mastek,

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What is t sql used for?

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What is crud diagram?

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What is the difference between sql and t sql?

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Is mariadb a nosql database?

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How do you assign Construct the where clause without concatenating Field,value pairs?

1 Answers   Microsoft,

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Q1.all the depts which has more then 10 empls? Q2.all the dept which does not have any emply? Q3 all the emp which does not have any dept? Q4 get all the emply detais with the dept details it dept is exit otherwise any emp details? Q5 how to debugg the dynamic sql and packages?

2 Answers  

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