What is a database trigger ? Name some usages of database trigger ?

4 Answers  

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Can we insert in sql function?

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What is the difference between delete, truncate and drop command?

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What are functions in sql?

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what is called after appearing where clause

3 Answers  

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How many clustered indexes can you have?

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What is the advantage of index in sql?

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what are all the different normalizations? : Sql dba

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consider a table which contain 4 columns,ename,eno,sal and deptno, from this table i want to know ename who having maximum salary in deptno 10 and 20.

24 Answers   Mind Tree,

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what is sp_pkeys? : Transact sql

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What is the clause we need to add in function body to return variable?

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Hi, Can anybody please explain me the flow of the below query. I am not able to understand how this query works. This query is for finding the Nth highest salary.. SELECT DISTINCT (a.sal) FROM EMP A WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B WHERE a.sal<=b.sal); If N = 2 then second highest salary will be the o/p. If N = 3 then third highest salary will be the o/p. and so on.. Thanks, Nitin

5 Answers   Deloitte, Ness Technologies,

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